A friend sent me an e-mail with a few pictures of the Picasso in Daley Plaza. The first two were fairly standard shots... the third is the interesting one. Sculpture should be designed to be viewd from all sides, but many times people only really look at the front view. How many pictures of David's backside do you see? Apparently the Picasso included a profile of his wife in the sculpture. See if you can find it.
And the next time you're looking at a sculpture, walk around it and see what you can find.