diff --git a/apps/manacore/apps/web/src/lib/components/observatory/SeenplatteScene.svelte b/apps/manacore/apps/web/src/lib/components/observatory/SeenplatteScene.svelte
new file mode 100644
index 000000000..6b82157f3
--- /dev/null
+++ b/apps/manacore/apps/web/src/lib/components/observatory/SeenplatteScene.svelte
@@ -0,0 +1,157 @@
+<script lang="ts">
+	import { SCENE, LAKES, RIVERS } from './data/layout';
+	import { createMockEcosystem } from './data/mockData';
+	import Background from './terrain/Background.svelte';
+	import Terrain from './terrain/Terrain.svelte';
+	import WaterBody from './terrain/WaterBody.svelte';
+	import RiverFlow from './water/RiverFlow.svelte';
+	import PlantFactory from './plants/PlantFactory.svelte';
+
+	let { onSelectApp }: { onSelectApp?: (appId: string) => void } = $props();
+
+	let apps = $state(createMockEcosystem());
+	let selectedApp = $state<string | null>(null);
+
+	// Pan & zoom state
+	let svgEl: SVGSVGElement | undefined = $state();
+	let viewBox = $state({ x: 0, y: 0, w: SCENE.width as number, h: SCENE.height as number });
+	let isPanning = $state(false);
+	let panStart = $state({ x: 0, y: 0 });
+	let panViewBoxStart = $state({ x: 0, y: 0 });
+
+	function handleWheel(e: WheelEvent) {
+		e.preventDefault();
+		const scaleFactor = e.deltaY > 0 ? 1.08 : 0.92;
+		const rect = svgEl?.getBoundingClientRect();
+		if (!rect) return;
+
+		// Mouse position as fraction of SVG
+		const mx = (e.clientX - rect.left) / rect.width;
+		const my = (e.clientY - rect.top) / rect.height;
+
+		// Point in viewBox coordinates under mouse
+		const px = viewBox.x + mx * viewBox.w;
+		const py = viewBox.y + my * viewBox.h;
+
+		// Scale viewBox dimensions
+		const nw = Math.max(400, Math.min(SCENE.width * 2, viewBox.w * scaleFactor));
+		const nh = Math.max(225, Math.min(SCENE.height * 2, viewBox.h * scaleFactor));
+
+		// Adjust position to keep point under mouse
+		viewBox = {
+			x: px - mx * nw,
+			y: py - my * nh,
+			w: nw,
+			h: nh,
+		};
+	}
+
+	function handlePointerDown(e: PointerEvent) {
+		if (e.button !== 0) return;
+		isPanning = true;
+		panStart = { x: e.clientX, y: e.clientY };
+		panViewBoxStart = { x: viewBox.x, y: viewBox.y };
+		(e.currentTarget as SVGSVGElement).setPointerCapture(e.pointerId);
+	}
+
+	function handlePointerMove(e: PointerEvent) {
+		if (!isPanning || !svgEl) return;
+		const rect = svgEl.getBoundingClientRect();
+		const dx = ((e.clientX - panStart.x) / rect.width) * viewBox.w;
+		const dy = ((e.clientY - panStart.y) / rect.height) * viewBox.h;
+		viewBox = {
+			...viewBox,
+			x: panViewBoxStart.x - dx,
+			y: panViewBoxStart.y - dy,
+		};
+	}
+
+	function handlePointerUp() {
+		isPanning = false;
+	}
+
+	function handleAppClick(appId: string) {
+		selectedApp = appId;
+		onSelectApp?.(appId);
+	}
+
+	function resetView() {
+		viewBox = { x: 0, y: 0, w: SCENE.width, h: SCENE.height };
+	}
+
+	let viewBoxStr = $derived(`${viewBox.x} ${viewBox.y} ${viewBox.w} ${viewBox.h}`);
+</script>
+
+<div class="relative h-full w-full overflow-hidden rounded-xl bg-sky-100">
+	<!-- Reset zoom button -->
+	<button
+		type="button"
+		onclick={resetView}
+		class="absolute right-3 top-3 z-10 rounded-lg bg-white/80 px-3 py-1.5 text-xs font-medium text-gray-600 shadow-sm backdrop-blur-sm transition-colors hover:bg-white"
+	>
+		Reset View
+	</button>
+
+	<!-- Title overlay -->
+	<div class="absolute left-4 top-3 z-10">
+		<h2 class="text-lg font-semibold text-slate-700/80" style="font-family: serif;">
+			Mana Seenplatte
+		</h2>
+		<p class="text-xs text-slate-500/70">Ecosystem Observatory</p>
+	</div>
+
+	<!-- Legend -->
+	<div
+		class="absolute bottom-3 left-3 z-10 flex gap-3 rounded-lg bg-white/70 px-3 py-2 text-[10px] text-slate-600 backdrop-blur-sm"
+	>
+		<span class="flex items-center gap-1">
+			<svg width="12" height="12"><circle cx="6" cy="8" r="3" fill="#2D6B30" /></svg>
+			Mature
+		</span>
+		<span class="flex items-center gap-1">
+			<svg width="12" height="12"><circle cx="6" cy="8" r="3" fill="#3E8B42" /></svg>
+			Production
+		</span>
+		<span class="flex items-center gap-1">
+			<svg width="12" height="12"><circle cx="6" cy="8" r="3" fill="#7DB86A" /></svg>
+			Beta
+		</span>
+		<span class="flex items-center gap-1">
+			<svg width="12" height="12"><circle cx="6" cy="8" r="3" fill="#C4B848" /></svg>
+			Alpha
+		</span>
+	</div>
+
+	<svg
+		bind:this={svgEl}
+		viewBox={viewBoxStr}
+		class="h-full w-full"
+		style="cursor: {isPanning ? 'grabbing' : 'grab'};"
+		onwheel={handleWheel}
+		onpointerdown={handlePointerDown}
+		onpointermove={handlePointerMove}
+		onpointerup={handlePointerUp}
+		onpointerleave={handlePointerUp}
+	>
+		<!-- Layer 1: Sky + Mountains -->
+		<Background />
+
+		<!-- Layer 2: Terrain (meadows, shores) -->
+		<Terrain />
+
+		<!-- Layer 3: Rivers (behind lakes) -->
+		{#each RIVERS as river}
+			<RiverFlow {river} />
+		{/each}
+
+		<!-- Layer 4: Lakes -->
+		{#each LAKES as lake}
+			<WaterBody {lake} />
+		{/each}
+
+		<!-- Layer 5: Plants (apps) sorted by y-position for depth -->
+		{#each apps.toSorted((a, b) => a.position.y - b.position.y) as app (app.id)}
+			<PlantFactory {app} onclick={() => handleAppClick(app.id)} />
+		{/each}
+	</svg>
+</div>
diff --git a/apps/manacore/apps/web/src/lib/components/observatory/data/colors.ts b/apps/manacore/apps/web/src/lib/components/observatory/data/colors.ts
new file mode 100644
index 000000000..74856010b
--- /dev/null
+++ b/apps/manacore/apps/web/src/lib/components/observatory/data/colors.ts
@@ -0,0 +1,84 @@
+// Natural color palette for the Seenplatte ecosystem
+
+export const sky = {
+	dayTop: '#87CEEB',
+	dayBottom: '#E0F0FF',
+	duskTop: '#2C1654',
+	duskBottom: '#E8956A',
+	nightTop: '#0B1026',
+	nightBottom: '#1A2444',
+} as const;
+
+export const mountains = {
+	far: '#8BA4B8',
+	mid: '#6B8A9E',
+	near: '#4A7085',
+	snow: '#E8F0F4',
+} as const;
+
+export const water = {
+	shallow: '#7EC8D9',
+	mid: '#4BA3B5',
+	deep: '#2A7A8C',
+	veryDeep: '#1A5666',
+	river: '#5BB5C5',
+	highlight: '#A8E4F0',
+	foam: '#E8F6FA',
+} as const;
+
+export const terrain = {
+	meadow: '#7DB86A',
+	meadowLight: '#96CC86',
+	meadowDark: '#5E9A4D',
+	shore: '#C4B48A',
+	shoreDark: '#A89870',
+	path: '#D4C4A0',
+	rock: '#8C8C80',
+	rockLight: '#A8A89C',
+} as const;
+
+export const vegetation = {
+	// Tree health colors based on ManaScore
+	healthyDark: '#2D6B30',
+	healthy: '#3E8B42',
+	healthyLight: '#5AAB5E',
+	moderate: '#7DB86A',
+	warning: '#C4B848',
+	stressed: '#D4944A',
+	critical: '#B85C4A',
+
+	// Specific plant colors
+	trunk: '#6B4E3D',
+	trunkLight: '#8B6E5D',
+	reed: '#7DA868',
+	reedDark: '#5A8548',
+	lilyPad: '#4A8B50',
+	lilyFlower: '#E8B0D0',
+	lilyFlowerCenter: '#F0D060',
+	moss: '#5A8B4A',
+	mossLight: '#78A868',
+	sprout: '#90C880',
+	sproutStake: '#A89070',
+} as const;
+
+/**
+ * Get tree crown color based on ManaScore (0-100)
+ */
+export function getHealthColor(score: number): string {
+	if (score >= 85) return vegetation.healthyDark;
+	if (score >= 70) return vegetation.healthy;
+	if (score >= 55) return vegetation.moderate;
+	if (score >= 40) return vegetation.warning;
+	if (score >= 25) return vegetation.stressed;
+	return vegetation.critical;
+}
+
+/**
+ * Get water clarity based on error rate (0 = clear, 1 = murky)
+ */
+export function getWaterColor(clarity: number): string {
+	if (clarity > 0.8) return water.shallow;
+	if (clarity > 0.5) return water.mid;
+	if (clarity > 0.2) return water.deep;
+	return water.veryDeep;
+}
diff --git a/apps/manacore/apps/web/src/lib/components/observatory/data/layout.ts b/apps/manacore/apps/web/src/lib/components/observatory/data/layout.ts
new file mode 100644
index 000000000..9775aa896
--- /dev/null
+++ b/apps/manacore/apps/web/src/lib/components/observatory/data/layout.ts
@@ -0,0 +1,172 @@
+import type { LakeData, RiverData } from './types';
+
+// Scene dimensions (SVG viewBox)
+export const SCENE = {
+	width: 1600,
+	height: 900,
+	viewBox: '0 0 1600 900',
+} as const;
+
+// Mountain layer paths (3 layers, back to front)
+export const MOUNTAIN_PATHS = {
+	far: 'M0,280 Q200,180 400,240 Q500,210 600,250 Q750,160 900,220 Q1050,180 1200,230 Q1350,170 1500,210 L1600,240 L1600,350 L0,350 Z',
+	mid: 'M0,310 Q150,250 300,290 Q450,240 550,280 Q700,220 850,270 Q1000,230 1150,275 Q1300,240 1450,265 L1600,280 L1600,380 L0,380 Z',
+	near: 'M0,340 Q100,300 250,330 Q400,290 500,320 Q650,280 800,315 Q950,285 1100,320 Q1250,295 1400,310 L1600,320 L1600,400 L0,400 Z',
+} as const;
+
+// Lake definitions with organic SVG paths
+export const LAKES: LakeData[] = [
+	{
+		id: 'auth',
+		name: 'auth',
+		label: 'Zentralsee',
+		path: 'M680,440 Q720,410 790,415 Q860,420 890,445 Q910,470 900,500 Q885,535 850,550 Q800,565 750,558 Q700,550 680,525 Q660,500 665,470 Q668,450 680,440 Z',
+		color: '#4BA3B5',
+		colorDeep: '#2A7A8C',
+		clarity: 1,
+		level: 0.8,
+		position: { x: 790, y: 485 },
+	},
+	{
+		id: 'redis',
+		name: 'redis',
+		label: 'Bergsee',
+		path: 'M280,390 Q310,370 350,375 Q390,380 405,400 Q415,420 405,440 Q390,455 355,460 Q320,462 295,450 Q275,435 270,415 Q268,398 280,390 Z',
+		color: '#7EC8D9',
+		colorDeep: '#4BA3B5',
+		clarity: 1,
+		level: 0.9,
+		position: { x: 340, y: 420 },
+	},
+	{
+		id: 'minio',
+		name: 'minio',
+		label: 'Stausee',
+		path: 'M1180,400 Q1220,375 1280,380 Q1340,385 1370,410 Q1390,435 1380,465 Q1360,490 1320,500 Q1270,510 1220,502 Q1185,492 1170,468 Q1158,445 1165,420 Q1170,405 1180,400 Z',
+		color: '#5BB5C5',
+		colorDeep: '#3A8A9A',
+		clarity: 0.9,
+		level: 0.7,
+		position: { x: 1275, y: 440 },
+	},
+	{
+		id: 'db-left',
+		name: 'postgres-left',
+		label: 'Waldsee West',
+		path: 'M180,580 Q220,555 280,560 Q340,565 365,590 Q380,615 370,640 Q355,665 310,675 Q260,682 215,670 Q180,658 165,635 Q155,612 165,595 Q170,582 180,580 Z',
+		color: '#3A8A9A',
+		colorDeep: '#1A5666',
+		clarity: 0.85,
+		level: 0.75,
+		position: { x: 270, y: 620 },
+	},
+	{
+		id: 'db-center',
+		name: 'postgres-center',
+		label: 'Waldsee Mitte',
+		path: 'M650,620 Q700,595 770,600 Q840,605 870,635 Q890,660 878,690 Q862,718 810,730 Q760,738 710,730 Q660,720 640,695 Q625,670 632,645 Q638,628 650,620 Z',
+		color: '#3A8A9A',
+		colorDeep: '#1A5666',
+		clarity: 0.9,
+		level: 0.8,
+		position: { x: 760, y: 665 },
+	},
+	{
+		id: 'db-right',
+		name: 'postgres-right',
+		label: 'Waldsee Ost',
+		path: 'M1120,590 Q1160,568 1220,572 Q1280,578 1305,600 Q1322,625 1315,652 Q1300,678 1255,690 Q1210,698 1165,688 Q1130,678 1115,655 Q1102,632 1108,610 Q1112,595 1120,590 Z',
+		color: '#3A8A9A',
+		colorDeep: '#1A5666',
+		clarity: 0.85,
+		level: 0.75,
+		position: { x: 1215, y: 630 },
+	},
+];
+
+// Rivers connecting the lakes
+export const RIVERS: RiverData[] = [
+	{
+		id: 'redis-to-auth',
+		from: 'redis',
+		to: 'auth',
+		path: 'M405,430 Q480,435 540,440 Q600,445 665,460',
+		flowSpeed: 0.8,
+		width: 8,
+	},
+	{
+		id: 'minio-to-auth',
+		from: 'minio',
+		to: 'auth',
+		path: 'M1170,450 Q1100,455 1020,460 Q940,465 900,475',
+		flowSpeed: 0.6,
+		width: 8,
+	},
+	{
+		id: 'auth-to-db-left',
+		from: 'auth',
+		to: 'db-left',
+		path: 'M710,555 Q620,570 520,580 Q420,590 365,595',
+		flowSpeed: 0.7,
+		width: 10,
+	},
+	{
+		id: 'auth-to-db-center',
+		from: 'auth',
+		to: 'db-center',
+		path: 'M790,560 Q785,580 778,600 Q770,610 765,620',
+		flowSpeed: 0.7,
+		width: 10,
+	},
+	{
+		id: 'auth-to-db-right',
+		from: 'auth',
+		to: 'db-right',
+		path: 'M870,548 Q960,565 1040,575 Q1080,582 1115,592',
+		flowSpeed: 0.7,
+		width: 10,
+	},
+	{
+		id: 'inlet',
+		from: 'source',
+		to: 'auth',
+		path: 'M790,350 Q792,370 790,390 Q788,410 790,420',
+		flowSpeed: 0.9,
+		width: 6,
+	},
+];
+
+// App positions around the lakes
+export const APP_POSITIONS: Record<string, { x: number; y: number; lakeId: string }> = {
+	// Around Zentralsee (auth) - core/mature apps
+	manacore: { x: 730, y: 410, lakeId: 'auth' },
+	chat: { x: 860, y: 420, lakeId: 'auth' },
+	picture: { x: 910, y: 480, lakeId: 'auth' },
+	presi: { x: 660, y: 490, lakeId: 'auth' },
+
+	// Around Waldsee West (db-left)
+	calendar: { x: 170, y: 560, lakeId: 'db-left' },
+	todo: { x: 330, y: 555, lakeId: 'db-left' },
+	contacts: { x: 370, y: 630, lakeId: 'db-left' },
+	storage: { x: 160, y: 650, lakeId: 'db-left' },
+
+	// Around Waldsee Mitte (db-center)
+	zitare: { x: 640, y: 600, lakeId: 'db-center' },
+	mukke: { x: 850, y: 610, lakeId: 'db-center' },
+	clock: { x: 880, y: 680, lakeId: 'db-center' },
+	nutriphi: { x: 650, y: 720, lakeId: 'db-center' },
+
+	// Around Waldsee Ost (db-right)
+	photos: { x: 1110, y: 575, lakeId: 'db-right' },
+	skilltree: { x: 1310, y: 590, lakeId: 'db-right' },
+	context: { x: 1320, y: 660, lakeId: 'db-right' },
+	planta: { x: 1115, y: 675, lakeId: 'db-right' },
+
+	// Around Bergsee (redis) - lightweight/cache
+	matrix: { x: 260, y: 375, lakeId: 'redis' },
+	traces: { x: 400, y: 385, lakeId: 'redis' },
+
+	// Around Stausee (minio) - storage-heavy
+	manadeck: { x: 1180, y: 385, lakeId: 'minio' },
+	questions: { x: 1370, y: 400, lakeId: 'minio' },
+};
diff --git a/apps/manacore/apps/web/src/lib/components/observatory/data/mockData.ts b/apps/manacore/apps/web/src/lib/components/observatory/data/mockData.ts
new file mode 100644
index 000000000..bdb160166
--- /dev/null
+++ b/apps/manacore/apps/web/src/lib/components/observatory/data/mockData.ts
@@ -0,0 +1,362 @@
+import type { AppData, AppStatus, PlantType, CategoryScores } from './types';
+import { APP_POSITIONS } from './layout';
+
+interface AppDefinition {
+	id: string;
+	displayName: string;
+	score: number;
+	status: AppStatus;
+	categories: CategoryScores;
+}
+
+function getPlantType(status: AppStatus, score: number): PlantType {
+	if (score >= 85) return 'oak';
+	if (score >= 70) return 'birch';
+	if (status === 'beta' && score >= 55) return 'youngTree';
+	if (status === 'beta') return 'reed';
+	if (status === 'alpha') return 'sprout';
+	if (status === 'prototype') return 'sprout';
+	return 'youngTree';
+}
+
+const APP_DEFINITIONS: AppDefinition[] = [
+	{
+		id: 'calendar',
+		displayName: 'Calendar',
+		score: 97,
+		status: 'mature',
+		categories: {
+			backend: 95,
+			frontend: 96,
+			database: 95,
+			testing: 98,
+			deployment: 100,
+			documentation: 98,
+			security: 95,
+			ux: 98,
+		},
+	},
+	{
+		id: 'todo',
+		displayName: 'Todo',
+		score: 96,
+		status: 'mature',
+		categories: {
+			backend: 94,
+			frontend: 95,
+			database: 95,
+			testing: 97,
+			deployment: 98,
+			documentation: 95,
+			security: 95,
+			ux: 96,
+		},
+	},
+	{
+		id: 'contacts',
+		displayName: 'Contacts',
+		score: 94,
+		status: 'production',
+		categories: {
+			backend: 92,
+			frontend: 90,
+			database: 95,
+			testing: 92,
+			deployment: 95,
+			documentation: 95,
+			security: 95,
+			ux: 94,
+		},
+	},
+	{
+		id: 'manacore',
+		displayName: 'ManaCore',
+		score: 88,
+		status: 'production',
+		categories: {
+			backend: 55,
+			frontend: 90,
+			database: 70,
+			testing: 72,
+			deployment: 90,
+			documentation: 88,
+			security: 80,
+			ux: 92,
+		},
+	},
+	{
+		id: 'presi',
+		displayName: 'Presi',
+		score: 86,
+		status: 'mature',
+		categories: {
+			backend: 90,
+			frontend: 82,
+			database: 85,
+			testing: 80,
+			deployment: 90,
+			documentation: 85,
+			security: 85,
+			ux: 88,
+		},
+	},
+	{
+		id: 'storage',
+		displayName: 'Storage',
+		score: 84,
+		status: 'production',
+		categories: {
+			backend: 88,
+			frontend: 84,
+			database: 82,
+			testing: 78,
+			deployment: 88,
+			documentation: 82,
+			security: 85,
+			ux: 82,
+		},
+	},
+	{
+		id: 'chat',
+		displayName: 'Chat',
+		score: 82,
+		status: 'production',
+		categories: {
+			backend: 90,
+			frontend: 82,
+			database: 80,
+			testing: 68,
+			deployment: 88,
+			documentation: 85,
+			security: 80,
+			ux: 78,
+		},
+	},
+	{
+		id: 'picture',
+		displayName: 'Picture',
+		score: 81,
+		status: 'production',
+		categories: {
+			backend: 90,
+			frontend: 80,
+			database: 75,
+			testing: 65,
+			deployment: 85,
+			documentation: 82,
+			security: 82,
+			ux: 80,
+		},
+	},
+	{
+		id: 'mukke',
+		displayName: 'Mukke',
+		score: 80,
+		status: 'beta',
+		categories: {
+			backend: 90,
+			frontend: 78,
+			database: 80,
+			testing: 60,
+			deployment: 85,
+			documentation: 78,
+			security: 80,
+			ux: 80,
+		},
+	},
+	{
+		id: 'matrix',
+		displayName: 'Matrix',
+		score: 68,
+		status: 'production',
+		categories: {
+			backend: 10,
+			frontend: 78,
+			database: 60,
+			testing: 50,
+			deployment: 85,
+			documentation: 70,
+			security: 75,
+			ux: 72,
+		},
+	},
+	{
+		id: 'nutriphi',
+		displayName: 'NutriPhi',
+		score: 63,
+		status: 'beta',
+		categories: {
+			backend: 78,
+			frontend: 62,
+			database: 65,
+			testing: 42,
+			deployment: 70,
+			documentation: 58,
+			security: 62,
+			ux: 65,
+		},
+	},
+	{
+		id: 'photos',
+		displayName: 'Photos',
+		score: 62,
+		status: 'beta',
+		categories: {
+			backend: 82,
+			frontend: 65,
+			database: 60,
+			testing: 38,
+			deployment: 68,
+			documentation: 55,
+			security: 60,
+			ux: 62,
+		},
+	},
+	{
+		id: 'zitare',
+		displayName: 'Zitare',
+		score: 62,
+		status: 'beta',
+		categories: {
+			backend: 72,
+			frontend: 78,
+			database: 60,
+			testing: 38,
+			deployment: 68,
+			documentation: 55,
+			security: 58,
+			ux: 65,
+		},
+	},
+	{
+		id: 'context',
+		displayName: 'Context',
+		score: 60,
+		status: 'beta',
+		categories: {
+			backend: 75,
+			frontend: 75,
+			database: 55,
+			testing: 32,
+			deployment: 65,
+			documentation: 52,
+			security: 58,
+			ux: 60,
+		},
+	},
+	{
+		id: 'clock',
+		displayName: 'Clock',
+		score: 58,
+		status: 'beta',
+		categories: {
+			backend: 75,
+			frontend: 70,
+			database: 55,
+			testing: 30,
+			deployment: 62,
+			documentation: 48,
+			security: 55,
+			ux: 58,
+		},
+	},
+	{
+		id: 'skilltree',
+		displayName: 'SkillTree',
+		score: 58,
+		status: 'beta',
+		categories: {
+			backend: 65,
+			frontend: 68,
+			database: 55,
+			testing: 35,
+			deployment: 60,
+			documentation: 50,
+			security: 55,
+			ux: 60,
+		},
+	},
+	{
+		id: 'planta',
+		displayName: 'Planta',
+		score: 50,
+		status: 'alpha',
+		categories: {
+			backend: 68,
+			frontend: 58,
+			database: 45,
+			testing: 25,
+			deployment: 55,
+			documentation: 42,
+			security: 48,
+			ux: 50,
+		},
+	},
+	{
+		id: 'manadeck',
+		displayName: 'ManaDeck',
+		score: 48,
+		status: 'alpha',
+		categories: {
+			backend: 50,
+			frontend: 65,
+			database: 42,
+			testing: 28,
+			deployment: 52,
+			documentation: 45,
+			security: 42,
+			ux: 55,
+		},
+	},
+	{
+		id: 'questions',
+		displayName: 'Questions',
+		score: 48,
+		status: 'alpha',
+		categories: {
+			backend: 88,
+			frontend: 62,
+			database: 40,
+			testing: 20,
+			deployment: 45,
+			documentation: 38,
+			security: 40,
+			ux: 42,
+		},
+	},
+	{
+		id: 'traces',
+		displayName: 'Traces',
+		score: 35,
+		status: 'alpha',
+		categories: {
+			backend: 72,
+			frontend: 10,
+			database: 35,
+			testing: 15,
+			deployment: 40,
+			documentation: 30,
+			security: 35,
+			ux: 25,
+		},
+	},
+];
+
+export function createMockEcosystem(): AppData[] {
+	return APP_DEFINITIONS.map((def) => {
+		const pos = APP_POSITIONS[def.id] || { x: 800, y: 500, lakeId: 'auth' };
+		return {
+			id: def.id,
+			name: def.id,
+			displayName: def.displayName,
+			score: def.score,
+			status: def.status,
+			health: 'up' as const,
+			plantType: getPlantType(def.status, def.score),
+			categories: def.categories,
+			trend: 0,
+			lakeId: pos.lakeId,
+			position: { x: pos.x, y: pos.y },
+		};
+	});
+}
diff --git a/apps/manacore/apps/web/src/lib/components/observatory/data/types.ts b/apps/manacore/apps/web/src/lib/components/observatory/data/types.ts
new file mode 100644
index 000000000..51d495acc
--- /dev/null
+++ b/apps/manacore/apps/web/src/lib/components/observatory/data/types.ts
@@ -0,0 +1,69 @@
+export type PlantType =
+	| 'oak'
+	| 'birch'
+	| 'youngTree'
+	| 'reed'
+	| 'waterLily'
+	| 'moss'
+	| 'shrub'
+	| 'sprout'
+	| 'stump'
+	| 'swampCluster';
+
+export type AppStatus = 'prototype' | 'alpha' | 'beta' | 'production' | 'mature';
+
+export type HealthStatus = 'up' | 'degraded' | 'down' | 'unknown';
+
+export interface CategoryScores {
+	backend: number;
+	frontend: number;
+	database: number;
+	testing: number;
+	deployment: number;
+	documentation: number;
+	security: number;
+	ux: number;
+}
+
+export interface AppData {
+	id: string;
+	name: string;
+	displayName: string;
+	score: number;
+	status: AppStatus;
+	health: HealthStatus;
+	plantType: PlantType;
+	categories: CategoryScores;
+	trend: number;
+	lakeId: string;
+	position: { x: number; y: number };
+}
+
+export interface LakeData {
+	id: string;
+	name: string;
+	label: string;
+	path: string;
+	color: string;
+	colorDeep: string;
+	clarity: number; // 0-1, 1 = crystal clear
+	level: number; // 0-1, normalized fill level
+	position: { x: number; y: number };
+}
+
+export interface RiverData {
+	id: string;
+	from: string;
+	to: string;
+	path: string;
+	flowSpeed: number; // 0-1
+	width: number;
+}
+
+export interface EcosystemState {
+	apps: AppData[];
+	lakes: LakeData[];
+	rivers: RiverData[];
+	timeOfDay: number; // 0-24
+	systemHealth: 'sunny' | 'cloudy' | 'stormy';
+}
diff --git a/apps/manacore/apps/web/src/lib/components/observatory/plants/MossCluster.svelte b/apps/manacore/apps/web/src/lib/components/observatory/plants/MossCluster.svelte
new file mode 100644
index 000000000..724fdae38
--- /dev/null
+++ b/apps/manacore/apps/web/src/lib/components/observatory/plants/MossCluster.svelte
@@ -0,0 +1,63 @@
+<script lang="ts">
+	import type { AppData } from '../data/types';
+	import { vegetation } from '../data/colors';
+
+	let { app, onclick }: { app: AppData; onclick?: () => void } = $props();
+
+	let spread = $derived(10 + (app.score / 100) * 15);
+
+	function mossPatches(seed: string) {
+		const patches = [];
+		let hash = 0;
+		for (let i = 0; i < seed.length; i++) {
+			hash = ((hash << 5) - hash + seed.charCodeAt(i)) | 0;
+		}
+		const count = 4 + (Math.abs(hash) % 5);
+		for (let i = 0; i < count; i++) {
+			hash = ((hash << 5) - hash + i * 17) | 0;
+			patches.push({
+				cx: ((hash & 0xff) / 255 - 0.5) * spread * 2,
+				cy: (((hash >> 8) & 0xff) / 255 - 0.5) * spread * 0.8,
+				rx: 3 + ((hash >> 16) & 0x7),
+				ry: 2 + ((hash >> 20) & 0x5),
+				light: i % 3 === 0,
+			});
+		}
+		return patches;
+	}
+
+	let patches = $derived(mossPatches(app.id));
+</script>
+
+<g
+	class="plant-moss"
+	transform="translate({app.position.x}, {app.position.y})"
+	style="cursor: pointer;"
+	role="button"
+	tabindex="0"
+	{onclick}
+	onkeydown={(e) => e.key === 'Enter' && onclick?.()}
+>
+	{#each patches as patch}
+		<ellipse
+			cx={patch.cx}
+			cy={patch.cy}
+			rx={patch.rx}
+			ry={patch.ry}
+			fill={patch.light ? vegetation.mossLight : vegetation.moss}
+			opacity="0.6"
+		/>
+	{/each}
+
+	<!-- Label -->
+	<text
+		y={spread * 0.5 + 12}
+		text-anchor="middle"
+		font-size="8"
+		font-family="system-ui, sans-serif"
+		fill="#5A7060"
+		opacity="0.5"
+	>
+		{app.displayName}
+	</text>
+</g>
diff --git a/apps/manacore/apps/web/src/lib/components/observatory/plants/PlantFactory.svelte b/apps/manacore/apps/web/src/lib/components/observatory/plants/PlantFactory.svelte
new file mode 100644
index 000000000..74fd31aef
--- /dev/null
+++ b/apps/manacore/apps/web/src/lib/components/observatory/plants/PlantFactory.svelte
@@ -0,0 +1,25 @@
+<script lang="ts">
+	import type { AppData } from '../data/types';
+	import TreePlant from './TreePlant.svelte';
+	import ReedPlant from './ReedPlant.svelte';
+	import WaterLily from './WaterLily.svelte';
+	import Sprout from './Sprout.svelte';
+	import MossCluster from './MossCluster.svelte';
+
+	let { app, onclick }: { app: AppData; onclick?: () => void } = $props();
+</script>
+
+{#if app.plantType === 'oak' || app.plantType === 'birch' || app.plantType === 'youngTree'}
+	<TreePlant {app} {onclick} />
+{:else if app.plantType === 'reed'}
+	<ReedPlant {app} {onclick} />
+{:else if app.plantType === 'waterLily'}
+	<WaterLily {app} {onclick} />
+{:else if app.plantType === 'sprout'}
+	<Sprout {app} {onclick} />
+{:else if app.plantType === 'moss'}
+	<MossCluster {app} {onclick} />
+{:else}
+	<!-- Fallback: render as sprout -->
+	<Sprout {app} {onclick} />
+{/if}
diff --git a/apps/manacore/apps/web/src/lib/components/observatory/plants/ReedPlant.svelte b/apps/manacore/apps/web/src/lib/components/observatory/plants/ReedPlant.svelte
new file mode 100644
index 000000000..ccdfa9dfa
--- /dev/null
+++ b/apps/manacore/apps/web/src/lib/components/observatory/plants/ReedPlant.svelte
@@ -0,0 +1,98 @@
+<script lang="ts">
+	import type { AppData } from '../data/types';
+	import { vegetation } from '../data/colors';
+
+	let { app, onclick }: { app: AppData; onclick?: () => void } = $props();
+
+	let height = $derived(25 + (app.score / 100) * 30); // 25-55px tall
+	let stalkCount = $derived(3 + Math.floor(app.score / 20)); // 3-8 stalks
+	let animDelay = $derived(`${(app.id.charCodeAt(0) % 8) * 0.4}s`);
+
+	function stalks(count: number) {
+		const result = [];
+		for (let i = 0; i < count; i++) {
+			const offset = (i - (count - 1) / 2) * 5;
+			const h = height + (i % 3) * 5 - 5;
+			const curve = offset * 0.5;
+			result.push({ offset, h, curve, hasBulrush: i % 2 === 0 });
+		}
+		return result;
+	}
+
+	let stalkData = $derived(stalks(stalkCount));
+</script>
+
+<g
+	class="plant-reed"
+	transform="translate({app.position.x}, {app.position.y})"
+	style="cursor: pointer;"
+	role="button"
+	tabindex="0"
+	{onclick}
+	onkeydown={(e) => e.key === 'Enter' && onclick?.()}
+>
+	<g>
+		<animateTransform
+			attributeName="transform"
+			type="rotate"
+			values="-2,0,0; 2,0,0; -2,0,0"
+			dur="4s"
+			begin={animDelay}
+			repeatCount="indefinite"
+		/>
+
+		{#each stalkData as stalk}
+			<!-- Stalk -->
+			<path
+				d="M{stalk.offset},0 Q{stalk.offset + stalk.curve},{-stalk.h * 0.5} {stalk.offset +
+					stalk.curve * 1.2},{-stalk.h}"
+				fill="none"
+				stroke={vegetation.reed}
+				stroke-width="2"
+				stroke-linecap="round"
+			/>
+
+			<!-- Bulrush head (on some stalks) -->
+			{#if stalk.hasBulrush}
+				<ellipse
+					cx={stalk.offset + stalk.curve * 1.2}
+					cy={-stalk.h - 5}
+					rx="2.5"
+					ry="6"
+					fill={vegetation.reedDark}
+				/>
+			{/if}
+		{/each}
+
+		<!-- Leaf blades at base -->
+		<path
+			d="M-4,0 Q-10,-15 -8,-25"
+			fill="none"
+			stroke={vegetation.reed}
+			stroke-width="2.5"
+			stroke-linecap="round"
+			opacity="0.7"
+		/>
+		<path
+			d="M4,0 Q12,-12 10,-22"
+			fill="none"
+			stroke={vegetation.reed}
+			stroke-width="2.5"
+			stroke-linecap="round"
+			opacity="0.7"
+		/>
+	</g>
+
+	<!-- Label -->
+	<text
+		y="15"
+		text-anchor="middle"
+		font-size="9"
+		font-family="system-ui, sans-serif"
+		font-weight="500"
+		fill="#3A5040"
+		opacity="0.7"
+	>
+		{app.displayName}
+	</text>
+</g>
diff --git a/apps/manacore/apps/web/src/lib/components/observatory/plants/Sprout.svelte b/apps/manacore/apps/web/src/lib/components/observatory/plants/Sprout.svelte
new file mode 100644
index 000000000..7d6872a75
--- /dev/null
+++ b/apps/manacore/apps/web/src/lib/components/observatory/plants/Sprout.svelte
@@ -0,0 +1,81 @@
+<script lang="ts">
+	import type { AppData } from '../data/types';
+	import { vegetation } from '../data/colors';
+
+	let { app, onclick }: { app: AppData; onclick?: () => void } = $props();
+
+	let height = $derived(12 + (app.score / 100) * 18); // 12-30px
+	let animDelay = $derived(`${(app.id.charCodeAt(0) % 5) * 0.6}s`);
+</script>
+
+<g
+	class="plant-sprout"
+	transform="translate({app.position.x}, {app.position.y})"
+	style="cursor: pointer;"
+	role="button"
+	tabindex="0"
+	{onclick}
+	onkeydown={(e) => e.key === 'Enter' && onclick?.()}
+>
+	<g>
+		<animateTransform
+			attributeName="transform"
+			type="rotate"
+			values="-3,0,0; 3,0,0; -3,0,0"
+			dur="3.5s"
+			begin={animDelay}
+			repeatCount="indefinite"
+		/>
+
+		<!-- Support stake -->
+		<line
+			x1="3"
+			y1="2"
+			x2="3"
+			y2={-height - 5}
+			stroke={vegetation.sproutStake}
+			stroke-width="1.5"
+			stroke-linecap="round"
+		/>
+
+		<!-- Stem -->
+		<path
+			d="M0,0 Q-1,{-height * 0.5} 0,{-height}"
+			fill="none"
+			stroke={vegetation.sprout}
+			stroke-width="2"
+			stroke-linecap="round"
+		/>
+
+		<!-- Two small leaves -->
+		<path
+			d="M0,{-height * 0.6} Q-8,{-height * 0.7} -6,{-height * 0.85}"
+			fill={vegetation.sprout}
+			stroke={vegetation.sprout}
+			stroke-width="1"
+			opacity="0.8"
+		/>
+		<path
+			d="M0,{-height * 0.75} Q6,{-height * 0.8} 5,{-height * 0.95}"
+			fill={vegetation.sprout}
+			stroke={vegetation.sprout}
+			stroke-width="1"
+			opacity="0.8"
+		/>
+
+		<!-- Tiny leaf at top -->
+		<ellipse cx="0" cy={-height - 3} rx="3" ry="4" fill={vegetation.sprout} opacity="0.9" />
+	</g>
+
+	<!-- Label -->
+	<text
+		y="14"
+		text-anchor="middle"
+		font-size="8"
+		font-family="system-ui, sans-serif"
+		fill="#5A7060"
+		opacity="0.6"
+	>
+		{app.displayName}
+	</text>
+</g>
diff --git a/apps/manacore/apps/web/src/lib/components/observatory/plants/TreePlant.svelte b/apps/manacore/apps/web/src/lib/components/observatory/plants/TreePlant.svelte
new file mode 100644
index 000000000..67f108a5f
--- /dev/null
+++ b/apps/manacore/apps/web/src/lib/components/observatory/plants/TreePlant.svelte
@@ -0,0 +1,117 @@
+<script lang="ts">
+	import type { AppData } from '../data/types';
+	import { vegetation, getHealthColor } from '../data/colors';
+
+	let { app, onclick }: { app: AppData; onclick?: () => void } = $props();
+
+	let crownColor = $derived(getHealthColor(app.score));
+	let size = $derived(0.6 + (app.score / 100) * 0.6); // 0.6 - 1.2 scale
+	let isOak = $derived(app.plantType === 'oak');
+
+	// Generate pseudo-random but deterministic crown blobs
+	function crownBlobs(seed: string, count: number) {
+		const blobs = [];
+		let hash = 0;
+		for (let i = 0; i < seed.length; i++) {
+			hash = ((hash << 5) - hash + seed.charCodeAt(i)) | 0;
+		}
+		for (let i = 0; i < count; i++) {
+			hash = ((hash << 5) - hash + i * 37) | 0;
+			const angle = ((hash & 0xff) / 255) * Math.PI * 2;
+			const dist = ((hash >> 8) & 0xff) / 255;
+			blobs.push({
+				cx: Math.cos(angle) * dist * (isOak ? 22 : 16),
+				cy: -30 - Math.sin(angle) * dist * (isOak ? 18 : 14) - i * 3,
+				rx: (isOak ? 18 : 14) + ((hash >> 16) & 0xf) - 8,
+				ry: (isOak ? 14 : 11) + ((hash >> 20) & 0xf) - 8,
+			});
+		}
+		return blobs;
+	}
+
+	let blobs = $derived(crownBlobs(app.id, isOak ? 7 : 5));
+	let animDelay = $derived(`${(app.id.charCodeAt(0) % 10) * 0.3}s`);
+</script>
+
+<g
+	class="plant-tree"
+	transform="translate({app.position.x}, {app.position.y}) scale({size})"
+	style="cursor: pointer;"
+	role="button"
+	tabindex="0"
+	{onclick}
+	onkeydown={(e) => e.key === 'Enter' && onclick?.()}
+>
+	<!-- Wind sway animation wrapper -->
+	<g>
+		<animateTransform
+			attributeName="transform"
+			type="rotate"
+			values="-1,0,0; 1,0,0; -1,0,0"
+			dur="6s"
+			begin={animDelay}
+			repeatCount="indefinite"
+		/>
+
+		<!-- Shadow -->
+		<ellipse cx="8" cy="2" rx={isOak ? 20 : 14} ry="5" fill="black" opacity="0.1" />
+
+		<!-- Trunk -->
+		<path d="M-3,0 Q-4,-15 -2,-25 L2,-25 Q4,-15 3,0 Z" fill={vegetation.trunk} />
+		{#if isOak}
+			<!-- Branch left -->
+			<path d="M-2,-18 Q-12,-22 -16,-28 L-14,-30 Q-10,-24 -1,-20 Z" fill={vegetation.trunkLight} />
+			<!-- Branch right -->
+			<path d="M2,-20 Q10,-24 15,-30 L17,-28 Q12,-22 3,-18 Z" fill={vegetation.trunkLight} />
+		{/if}
+
+		<!-- Crown (cluster of ellipses) -->
+		<g>
+			{#each blobs as blob, i}
+				{@const lightness = i % 3 === 0 ? 15 : i % 3 === 1 ? 0 : -10}
+				<ellipse
+					cx={blob.cx}
+					cy={blob.cy}
+					rx={blob.rx}
+					ry={blob.ry}
+					fill={crownColor}
+					opacity={0.75 + (i % 3) * 0.08}
+					style="filter: brightness({100 + lightness}%)"
+				/>
+			{/each}
+
+			<!-- Highlight on top -->
+			<ellipse
+				cx={-4}
+				cy={-42}
+				rx={isOak ? 10 : 8}
+				ry={isOak ? 7 : 5}
+				fill="white"
+				opacity="0.08"
+			/>
+		</g>
+	</g>
+
+	<!-- Label -->
+	<text
+		y="18"
+		text-anchor="middle"
+		font-size="10"
+		font-family="system-ui, sans-serif"
+		font-weight="500"
+		fill="#3A5040"
+		opacity="0.8"
+	>
+		{app.displayName}
+	</text>
+	<text
+		y="30"
+		text-anchor="middle"
+		font-size="9"
+		font-family="system-ui, sans-serif"
+		fill="#5A7060"
+		opacity="0.6"
+	>
+		{app.score}
+	</text>
+</g>
diff --git a/apps/manacore/apps/web/src/lib/components/observatory/plants/WaterLily.svelte b/apps/manacore/apps/web/src/lib/components/observatory/plants/WaterLily.svelte
new file mode 100644
index 000000000..6d74057ef
--- /dev/null
+++ b/apps/manacore/apps/web/src/lib/components/observatory/plants/WaterLily.svelte
@@ -0,0 +1,118 @@
+<script lang="ts">
+	import type { AppData } from '../data/types';
+	import { vegetation } from '../data/colors';
+
+	let { app, onclick }: { app: AppData; onclick?: () => void } = $props();
+
+	let padSize = $derived(8 + (app.score / 100) * 10); // 8-18px radius
+	let petalCount = $derived(app.score >= 70 ? 8 : app.score >= 40 ? 6 : 4);
+	let bloomAmount = $derived(app.score / 100); // 0-1 how open the flower is
+	let animDelay = $derived(`${(app.id.charCodeAt(0) % 6) * 0.5}s`);
+
+	function petals(count: number) {
+		const result = [];
+		for (let i = 0; i < count; i++) {
+			const angle = (i / count) * Math.PI * 2 - Math.PI / 2;
+			result.push({ angle, i });
+		}
+		return result;
+	}
+
+	let petalData = $derived(petals(petalCount));
+</script>
+
+<g
+	class="plant-lily"
+	transform="translate({app.position.x}, {app.position.y})"
+	style="cursor: pointer;"
+	role="button"
+	tabindex="0"
+	{onclick}
+	onkeydown={(e) => e.key === 'Enter' && onclick?.()}
+>
+	<!-- Gentle bob animation -->
+	<g>
+		<animateTransform
+			attributeName="transform"
+			type="translate"
+			values="0,0; 0,-1.5; 0,0; 0,1; 0,0"
+			dur="5s"
+			begin={animDelay}
+			repeatCount="indefinite"
+		/>
+
+		<!-- Shadow under pad -->
+		<ellipse cx="1" cy="2" rx={padSize + 1} ry={padSize * 0.5 + 1} fill="black" opacity="0.1" />
+
+		<!-- Lily pad (circle with notch) -->
+		<path
+			d="M{padSize},0
+				A{padSize},{padSize * 0.55} 0 1,0 {-padSize},0
+				A{padSize},{padSize * 0.55} 0 1,0 {padSize},0
+				L0,0 L{padSize * 0.3},{-padSize * 0.15} Z"
+			fill={vegetation.lilyPad}
+			opacity="0.85"
+		/>
+		<!-- Pad vein -->
+		<line
+			x1="0"
+			y1="0"
+			x2={-padSize * 0.6}
+			y2={padSize * 0.15}
+			stroke="#3A7040"
+			stroke-width="0.5"
+			opacity="0.4"
+		/>
+		<line
+			x1="0"
+			y1="0"
+			x2={-padSize * 0.5}
+			y2={-padSize * 0.2}
+			stroke="#3A7040"
+			stroke-width="0.5"
+			opacity="0.4"
+		/>
+
+		<!-- Flower (if score > 20) -->
+		{#if app.score > 20}
+			<g transform="translate({-padSize * 0.2}, {-padSize * 0.1})">
+				<!-- Petals -->
+				{#each petalData as petal}
+					{@const px = Math.cos(petal.angle) * 5 * bloomAmount}
+					{@const py = Math.sin(petal.angle) * 3 * bloomAmount}
+					<ellipse
+						cx={px}
+						cy={py - 2}
+						rx={3.5 * bloomAmount + 1}
+						ry={2 * bloomAmount + 0.5}
+						fill={vegetation.lilyFlower}
+						opacity={0.7 + bloomAmount * 0.3}
+						transform="rotate({(petal.angle * 180) / Math.PI}, {px}, {py - 2})"
+					/>
+				{/each}
+
+				<!-- Center -->
+				<circle
+					cx="0"
+					cy="-2"
+					r={2 * bloomAmount + 0.5}
+					fill={vegetation.lilyFlowerCenter}
+					opacity="0.9"
+				/>
+			</g>
+		{/if}
+	</g>
+
+	<!-- Label -->
+	<text
+		y={padSize * 0.55 + 14}
+		text-anchor="middle"
+		font-size="9"
+		font-family="system-ui, sans-serif"
+		font-weight="500"
+		fill="#3A5040"
+		opacity="0.7"
+	>
+		{app.displayName}
+	</text>
+</g>
diff --git a/apps/manacore/apps/web/src/lib/components/observatory/terrain/Background.svelte b/apps/manacore/apps/web/src/lib/components/observatory/terrain/Background.svelte
new file mode 100644
index 000000000..4744cb934
--- /dev/null
+++ b/apps/manacore/apps/web/src/lib/components/observatory/terrain/Background.svelte
@@ -0,0 +1,70 @@
+<script lang="ts">
+	import { sky, mountains } from '../data/colors';
+	import { SCENE, MOUNTAIN_PATHS } from '../data/layout';
+</script>
+
+<!-- Sky gradient -->
+<defs>
+	<linearGradient id="sky-gradient" x1="0" y1="0" x2="0" y2="1">
+		<stop offset="0%" stop-color={sky.dayTop} />
+		<stop offset="100%" stop-color={sky.dayBottom} />
+	</linearGradient>
+
+	<!-- Subtle haze filter -->
+	<filter id="mountain-haze">
+		<feGaussianBlur stdDeviation="1.5" />
+	</filter>
+	<filter id="mountain-haze-light">
+		<feGaussianBlur stdDeviation="0.8" />
+	</filter>
+</defs>
+
+<!-- Sky fill -->
+<rect x="0" y="0" width={SCENE.width} height={SCENE.height} fill="url(#sky-gradient)" />
+
+<!-- Clouds (subtle, decorative) -->
+<g opacity="0.35">
+	<ellipse cx="300" cy="120" rx="120" ry="30" fill="white" />
+	<ellipse cx="340" cy="115" rx="80" ry="25" fill="white" />
+	<ellipse cx="260" cy="118" rx="60" ry="20" fill="white" />
+
+	<ellipse cx="1100" cy="90" rx="100" ry="25" fill="white" />
+	<ellipse cx="1140" cy="85" rx="70" ry="22" fill="white" />
+
+	<ellipse cx="700" cy="150" rx="90" ry="22" fill="white" />
+	<ellipse cx="740" cy="145" rx="65" ry="18" fill="white" />
+</g>
+
+<!-- Mountain layers (back to front) -->
+<g>
+	<!-- Far mountains (lightest, most hazy) -->
+	<path d={MOUNTAIN_PATHS.far} fill={mountains.far} opacity="0.6" filter="url(#mountain-haze)" />
+	<!-- Snow caps on far mountains -->
+	<path
+		d="M740,165 Q755,155 770,168 Q782,158 795,170 L790,180 Q775,172 760,180 Q748,172 740,178 Z"
+		fill={mountains.snow}
+		opacity="0.5"
+		filter="url(#mountain-haze)"
+	/>
+
+	<!-- Mid mountains -->
+	<path
+		d={MOUNTAIN_PATHS.mid}
+		fill={mountains.mid}
+		opacity="0.75"
+		filter="url(#mountain-haze-light)"
+	/>
+
+	<!-- Near mountains (darkest, sharpest) -->
+	<path d={MOUNTAIN_PATHS.near} fill={mountains.near} opacity="0.85" />
+</g>
+
+<!-- Tree line on near mountains (tiny triangles) -->
+<g opacity="0.4" fill="#3A6050">
+	{#each Array(60) as _, i}
+		{@const x = i * 28 + 10}
+		{@const baseY = 335 + Math.sin(i * 0.8) * 15}
+		{@const h = 12 + Math.sin(i * 1.3) * 5}
+		<polygon points="{x},{baseY} {x + 4},{baseY - h} {x + 8},{baseY}" />
+	{/each}
+</g>
diff --git a/apps/manacore/apps/web/src/lib/components/observatory/terrain/Terrain.svelte b/apps/manacore/apps/web/src/lib/components/observatory/terrain/Terrain.svelte
new file mode 100644
index 000000000..9438136d0
--- /dev/null
+++ b/apps/manacore/apps/web/src/lib/components/observatory/terrain/Terrain.svelte
@@ -0,0 +1,59 @@
+<script lang="ts">
+	import { terrain } from '../data/colors';
+	import { SCENE } from '../data/layout';
+</script>
+
+<defs>
+	<!-- Meadow gradient (top = darker, bottom = lighter) -->
+	<linearGradient id="meadow-gradient" x1="0" y1="0" x2="0" y2="1">
+		<stop offset="0%" stop-color={terrain.meadowDark} />
+		<stop offset="40%" stop-color={terrain.meadow} />
+		<stop offset="100%" stop-color={terrain.meadowLight} />
+	</linearGradient>
+
+	<!-- Shore texture pattern -->
+	<pattern id="shore-dots" width="8" height="8" patternUnits="userSpaceOnUse">
+		<circle cx="2" cy="2" r="0.8" fill={terrain.shoreDark} opacity="0.3" />
+		<circle cx="6" cy="6" r="0.6" fill={terrain.shoreDark} opacity="0.2" />
+	</pattern>
+</defs>
+
+<!-- Main terrain fill (everything below mountains) -->
+<rect x="0" y="350" width={SCENE.width} height={SCENE.height - 350} fill="url(#meadow-gradient)" />
+
+<!-- Rolling hills / terrain variation -->
+<g>
+	<!-- Gentle hills in the meadow -->
+	<path
+		d="M0,380 Q200,360 400,375 Q600,365 800,378 Q1000,362 1200,372 Q1400,365 1600,380 L1600,420 Q1400,405 1200,410 Q1000,400 800,412 Q600,402 400,408 Q200,398 0,410 Z"
+		fill={terrain.meadow}
+		opacity="0.5"
+	/>
+
+	<!-- Shoreline areas around the lakes (sandy patches) -->
+	<ellipse cx="790" cy="485" rx="160" ry="95" fill={terrain.shore} opacity="0.3" />
+	<ellipse cx="340" cy="420" rx="90" ry="55" fill={terrain.shore} opacity="0.25" />
+	<ellipse cx="1275" cy="445" rx="130" ry="75" fill={terrain.shore} opacity="0.25" />
+	<ellipse cx="270" cy="625" rx="130" ry="75" fill={terrain.shore} opacity="0.3" />
+	<ellipse cx="760" cy="670" rx="140" ry="80" fill={terrain.shore} opacity="0.3" />
+	<ellipse cx="1215" cy="635" rx="125" ry="70" fill={terrain.shore} opacity="0.3" />
+</g>
+
+<!-- Small rocks scattered around -->
+<g fill={terrain.rock} opacity="0.5">
+	<ellipse cx="520" cy="450" rx="8" ry="5" />
+	<ellipse cx="525" cy="448" rx="5" ry="3" fill={terrain.rockLight} />
+	<ellipse cx="1050" cy="520" rx="6" ry="4" />
+	<ellipse cx="450" cy="650" rx="7" ry="4" />
+	<ellipse cx="950" cy="710" rx="9" ry="5" />
+	<ellipse cx="1400" cy="550" rx="5" ry="3" />
+</g>
+
+<!-- Grass tufts along the bottom -->
+<g opacity="0.4" fill={terrain.meadowDark}>
+	{#each Array(40) as _, i}
+		{@const x = i * 42 + 15}
+		{@const y = 820 + Math.sin(i * 2.1) * 20}
+		<path d="M{x},{y} Q{x + 2},{y - 12} {x + 5},{y} Q{x + 7},{y - 10} {x + 10},{y}" />
+	{/each}
+</g>
diff --git a/apps/manacore/apps/web/src/lib/components/observatory/terrain/WaterBody.svelte b/apps/manacore/apps/web/src/lib/components/observatory/terrain/WaterBody.svelte
new file mode 100644
index 000000000..ac7361670
--- /dev/null
+++ b/apps/manacore/apps/web/src/lib/components/observatory/terrain/WaterBody.svelte
@@ -0,0 +1,70 @@
+<script lang="ts">
+	import type { LakeData } from '../data/types';
+
+	let { lake }: { lake: LakeData } = $props();
+
+	// Unique IDs for gradients
+	let gradientId = $derived(`lake-gradient-${lake.id}`);
+	let reflectionId = $derived(`lake-reflection-${lake.id}`);
+</script>
+
+<defs>
+	<!-- Radial gradient for depth effect -->
+	<radialGradient id={gradientId} cx="50%" cy="40%" r="60%">
+		<stop offset="0%" stop-color={lake.color} stop-opacity={lake.clarity} />
+		<stop offset="100%" stop-color={lake.colorDeep} stop-opacity={lake.clarity * 0.9} />
+	</radialGradient>
+
+	<!-- Subtle shimmer/reflection -->
+	<radialGradient id={reflectionId} cx="40%" cy="30%" r="30%">
+		<stop offset="0%" stop-color="white" stop-opacity="0.15" />
+		<stop offset="100%" stop-color="white" stop-opacity="0" />
+	</radialGradient>
+</defs>
+
+<g class="lake" data-lake={lake.id}>
+	<!-- Lake body -->
+	<path
+		d={lake.path}
+		fill="url(#{gradientId})"
+		stroke="#3A8A9A"
+		stroke-width="0.5"
+		stroke-opacity="0.3"
+	/>
+
+	<!-- Light reflection on surface -->
+	<path d={lake.path} fill="url(#{reflectionId})" />
+
+	<!-- Animated wave lines on the surface -->
+	<g opacity="0.15" stroke="white" stroke-width="0.8" fill="none">
+		<path d={lake.path} stroke-dasharray="4 12" stroke-dashoffset="0">
+			<animate attributeName="stroke-dashoffset" values="0;16" dur="4s" repeatCount="indefinite" />
+		</path>
+	</g>
+
+	<!-- Second wave layer (offset timing) -->
+	<g opacity="0.1" stroke="white" stroke-width="0.5" fill="none">
+		<path d={lake.path} stroke-dasharray="3 15" stroke-dashoffset="8">
+			<animate
+				attributeName="stroke-dashoffset"
+				values="8;26"
+				dur="5.5s"
+				repeatCount="indefinite"
+			/>
+		</path>
+	</g>
+
+	<!-- Lake label -->
+	<text
+		x={lake.position.x}
+		y={lake.position.y}
+		text-anchor="middle"
+		font-size="11"
+		font-family="serif"
+		font-style="italic"
+		fill="#1A5666"
+		opacity="0.6"
+	>
+		{lake.label}
+	</text>
+</g>
diff --git a/apps/manacore/apps/web/src/lib/components/observatory/water/RiverFlow.svelte b/apps/manacore/apps/web/src/lib/components/observatory/water/RiverFlow.svelte
new file mode 100644
index 000000000..a1a3f3ec4
--- /dev/null
+++ b/apps/manacore/apps/web/src/lib/components/observatory/water/RiverFlow.svelte
@@ -0,0 +1,69 @@
+<script lang="ts">
+	import type { RiverData } from '../data/types';
+	import { water } from '../data/colors';
+
+	let { river }: { river: RiverData } = $props();
+
+	let duration = $derived(`${3 + (1 - river.flowSpeed) * 4}s`);
+	let dashLength = $derived(river.width * 1.5);
+	let gapLength = $derived(river.width * 3);
+</script>
+
+<g class="river" data-river={river.id}>
+	<!-- River bed (wider, darker) -->
+	<path
+		d={river.path}
+		fill="none"
+		stroke={water.deep}
+		stroke-width={river.width + 4}
+		stroke-linecap="round"
+		stroke-linejoin="round"
+		opacity="0.3"
+	/>
+
+	<!-- River water -->
+	<path
+		d={river.path}
+		fill="none"
+		stroke={water.river}
+		stroke-width={river.width}
+		stroke-linecap="round"
+		stroke-linejoin="round"
+		opacity="0.7"
+	/>
+
+	<!-- Animated flow particles -->
+	<path
+		d={river.path}
+		fill="none"
+		stroke={water.highlight}
+		stroke-width={river.width * 0.4}
+		stroke-linecap="round"
+		stroke-dasharray="{dashLength} {gapLength}"
+		opacity="0.4"
+	>
+		<animate
+			attributeName="stroke-dashoffset"
+			values="{dashLength + gapLength};0"
+			dur={duration}
+			repeatCount="indefinite"
+		/>
+	</path>
+
+	<!-- Surface shimmer -->
+	<path
+		d={river.path}
+		fill="none"
+		stroke="white"
+		stroke-width={river.width * 0.2}
+		stroke-dasharray="2 {gapLength * 1.5}"
+		opacity="0.2"
+	>
+		<animate
+			attributeName="stroke-dashoffset"
+			values="{gapLength * 1.5 + 2};0"
+			dur={duration}
+			repeatCount="indefinite"
+		/>
+	</path>
+</g>
diff --git a/apps/manacore/apps/web/src/routes/(app)/+layout.svelte b/apps/manacore/apps/web/src/routes/(app)/+layout.svelte
index 473329979..7ae8c6663 100644
--- a/apps/manacore/apps/web/src/routes/(app)/+layout.svelte
+++ b/apps/manacore/apps/web/src/routes/(app)/+layout.svelte
@@ -82,6 +82,7 @@
 	let baseNavItems: PillNavItem[] = [
 		{ href: '/home', label: 'Home', icon: 'home' },
 		{ href: '/dashboard', label: 'Dashboard', icon: 'grid' },
+		{ href: '/observatory', label: 'Observatory', icon: 'eye' },
 		{ href: '/credits', label: 'Credits', icon: 'creditCard' },
 		{ href: '/gifts', label: 'Geschenke', icon: 'gift' },
 		{ href: '/api-keys', label: 'API Keys', icon: 'key' },
diff --git a/apps/manacore/apps/web/src/routes/(app)/observatory/+page.svelte b/apps/manacore/apps/web/src/routes/(app)/observatory/+page.svelte
new file mode 100644
index 000000000..054187875
--- /dev/null
+++ b/apps/manacore/apps/web/src/routes/(app)/observatory/+page.svelte
@@ -0,0 +1,23 @@
+<script lang="ts">
+	import SeenplatteScene from '$lib/components/observatory/SeenplatteScene.svelte';
+
+	let selectedApp = $state<string | null>(null);
+
+	function handleSelectApp(appId: string) {
+		selectedApp = appId;
+	}
+</script>
+
+<div class="flex flex-col gap-4">
+	<div class="h-[calc(100vh-12rem)] min-h-[500px] w-full">
+		<SeenplatteScene onSelectApp={handleSelectApp} />
+	</div>
+
+	{#if selectedApp}
+		<div class="rounded-xl bg-white/80 p-4 shadow-sm backdrop-blur-sm dark:bg-gray-800/80">
+			<p class="text-sm text-gray-600 dark:text-gray-300">
+				Selected: <strong>{selectedApp}</strong> — Detail panel coming in Phase 5
+			</p>
+		</div>
+	{/if}
+</div>