I encountered these very intesting page: Michael Hansmeyer and his cardboard structures which are created using an subdivison algorithm.
Michael Hansmeyer is both an architect and a programmer. On his site, there are more of his amazing works, creating a very unique atmosphere reminding me of both history and highly futuristic environements.
Please check out the site to see more of this this architect /programmer's amazing works :
http://gizfactory.com/article/intricate-cardboard-structures-by-michael-hansmeyer/