Soft shadows. Ambience. Gamma correction. Dof. Reflections, refractions, shadows. Shadows on top of shadows. Total internal reflections. Put on the filters, the two that matter: Morphological and anisotropic. Shaders in machine code. HDR textures with a in RAW xK. Boost the photons. Dither beyond bits. Render to the subpixel. Antialiasing to the max. You get the picture.
A railway station with a garden. A vault with ribs of gold. A kaleidoscope in the roof.
Fly, or fry.