Inspired by M. C. Escher's Andere Wereld. The building is made of (booleaned) cubes and cylinders, the lamps of cylinders, the Utah teapot is a classic. The terrains were made from Moon height data, the galaxies and stars are from the Space Construction Kit (available at Daz 3D). Rendered conventional with the WhiteSphere HDRI without shadows to brighten up the inside a bit. Coloured, small errors because no object was slanted.