this is the historic center of Milano(Italy)that i have made in 3d.

See these link:

http://www.skyscrapercity.com/showthread.php?t=113842

http://www.skyscrapercity.com/showthread.php?t=113846

http://www.skyscrapercity.com/showthread.php?t=113847

http://www.skyscrapercity.com/showthread.php?t=113850

What do you think about?