In another forum I found these links to a really awesome 3D work (our Italian friends will probably enjoy it) in two parts:
http://www.serafimov.com/public/phpB...wtopic.php?t=5
http://www.serafimov.com/public/phpB...opic.php?t=196
Explanations are in Spanish, but only because of the pics it's really worth checking, amazing piece of work.