Intensely psychedelic "fractal" architecture animation

Welcome to the Mandelbox. Over at Dose Nation, the creator HömpörgÅ‘ says, "I wanted to go further too, but at the end part a single frame took 18 minutes to render, and the whole 1:27 minute video needed 12 days nonstop rendering. I felt thats more than enough at the time. It was just my first experiment with Mandelbulb 3D, a freeware program, I'm not a film director or something..."