Build a detailed interactive 3D Roman Colosseum in the browser. Include the elliptical amphitheater, stacked arcades, recognizable ruined outer wall, arena floor and surrounding terrain. Add atmospheric lighting, orbit/zoom camera controls and an automatic cinematic tour. Deliver the working browser artifact. Source: https://x.com/LuminaBench/status/2104995514433564800 (65K views, 433 likes observed 2026-10-01). Adapted reproduction brief based on the public post; not the original verbatim prompt. Compare the current Evals-selected models, not the original model versions.