Sagrada Família, built from Gaudí's rules

the prompt

Build a parametric 3D model of the Sagrada Família in Barcelona, complete as Gaudí designed it, that you can explore in the browser and change with sliders, plus photoreal renders and a flythrough. Context you should know: this is going into a video watched by a large audience. Your model is explored on camera next to other frontier models given this identical prompt, and next to photos of the real basilica. The comparison is blind. Never put your model name, your company's name, or any mention of which AI made it anywhere in what you build: not in on-screen text, credits, the page title, file names, code comments, or metadata. **Parametric means the geometry comes from rules, not hand-placed shapes.** Generate the basilica in code from Gaudí's own geometry: the ruled surfaces, hyperboloids and paraboloids, the tree-like branching columns, the repeating window and tower modules. Research the real building first and match its plan, proportions and details. **It must look real. This is judged strictly, side by side with photos.** Sandstone and concrete with real texture and weathering, carved facade sculpture, the fruit and mosaic finials on the spires, stained glass that throws colored light into the nave the way the real windows do, physically based materials, real sun and soft shadows. No low-poly, cartoon, flat or placeholder geometry. Requirements: 1. **The whole basilica, complete:** all eighteen towers (twelve apostles, four evangelists, the Virgin Mary and Jesus Christ), the Nativity, Passion and Glory facades, the apse, and the interior forest of branching columns under the vaults. 2. **Live sliders in the browser that rebuild the geometry:** a construction timeline from the first stone to completion, tower heights, the branching depth of the interior columns, and time of day. Every setting must stay architecturally correct: no floating pieces, gaps or broken arches. 3. **Explore it:** orbit the exterior, and walk into the nave to see the columns and the colored light. 4. **Photoreal renders made in Blender from the same geometry rules:** at least four hero stills (Nativity facade, Passion facade, aerial, interior nave) and a 30 to 60 second drone flythrough that ends inside the nave, 1920x1080, rendered on the GPU machine. Show them on the page alongside the live model. 5. **Runs smoothly** in a desktop browser at 1920x1080. **Deliver** a runnable project with a documented run command and a README explaining your geometry rules. DONE when: the live model rebuilds correctly at every slider setting, the exterior and interior hold up next to photos of the real basilica, the hero stills and flythrough render from the same rules and play on the page, and it runs smoothly.

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