Today I ran into some 3D fractals called "Mandelbulb" and "Mandelbox", and when I saw the renderings, the first thing I thought was "could be somewhere in Chaos"...

Take a look at (among others linked from those pages):
http://www.skytopia.com/project/fractal/mandelbulb.html
http://sites.google.com/site/mandelbox/home
http://krzysztofmarczak.deviantart.com/gallery/

Some of the renderings look like they could be a hall, the entrance to a cave, part of a palace or a cathedral... enjoy!

Cool!