Picture a sleek glass spine that cuts through the skyline, its surface a calm, silver pond that reflects the neon sky. Beneath it, a shallow channel carries real water, its ripples controlled by micro‑LEDs that pulse in sync with the city’s beat. Floating kiosks drift along the stream like boats, but they’re actually holographic pods that shift from retro‑futuristic storefronts to interactive art screens. The water becomes the city’s living billboard, breathing with the same quiet rhythm you noticed in that still pond.