Leon Lin’s golden-hour Japanese temple was built in three.js by Opus 5.5. Golden hour is a lighting problem: warm sun, long shadows, and a building that has to hold both.
Gemini 4 Argon, in Antigravity, sculpted a multi-building pagoda in Blender on its own. Visual critique loops handled architecture, foliage, and light.
Matt Shumer says Fable one-shotted the entire Hogwarts castle: classrooms, the Great Hall, the Quidditch pitch. Not a facade. The rooms the story actually uses.