"The Ministry of Defence of the Russian Federation built the secret shelter complex called "Object 08" to protect important persons from a disaster. It's the underground city located far beneath the surface of the planet"
I tried to reproduce my idea of such complex using 3ds max and mattepainting techniques.
here's fullsize picture - http://img121.imageshack.us/img121/6727/underworldfinalfullsize.jpg
link to wire - http://img262.imageshack.us/img262/3210/underworldwire.jpg
here's flash WIP - http://artnotes.ru/trainfender/wip.html
i worked with 4000х5508 pixels resolution for about 24 hours in total. I modelled and textured all stuff from scratch, than worked out rendered materials in PS & AE.