Many Proportions

http://blog.lib.umn.edu/hans2568/architecture

http://www.flickr.com/photos/luciuskwok/1753457918/

http://www.fairbanksartbooks.com/Proportions.html

http://www.gamedev.net/community/Forums/topic.asp?topic_id=424422

http://www.flickr.com/photos/brokentip/2326525973/