Where are nice local place to go in Philly?

[somethingdunk]

Im going to visit Philly on March 12-14 and wanted to go sight seeing. What are good place to go? Not trying to really go shopping that much. Mostly looking for place to walk and sight see.

Also what are good place to go eat? I been to Pat's Cheesesteak  before and will go there again.

I will be going with friends who are all over 21