Claude-built worlds: Union Square recreated in browser-native 3D
Fable 5.1 World Modeling
PhiloLabs' fable51-worlds repo shows how autonomous Claude Fable 5.1 agent swarms can research, model, and quality-check entire real-world locations, shipping them as plain Three.js apps. The first world, Union Square, San Francisco, includes 453 building footprints, 129 named storefronts, working traffic lights and cable cars, and explorable interiors of Apple and Nintendo stores. Everything is generated from open data and public imagery, with code in the repo for re-running the pipeline.
Every building, storefront, sign, tree and traffic light is generated from open data and public reference imagery by code that lives in this repo.