Be sure to check out shape grammars for non-organic procedural content generation; for example, the classic "Procedural Modeling of Buildings" from http://peter

Be sure to check out shape grammars for non-organic procedural content generation; for example, the classic "Procedural Modeling of Buildings" from http://peterwonka.net/Publications/publications.html http://peterwonka.net/Publications/publications.html (as well as many other great publications from that author).