I'm going to Philly for a tradeshow next week, and I'm taking an extra day there. I plan to visit the USS New Jersey (my grandfather was on the ship in the Korean war), but I'm not sure what to do with the rest of my day. Will probably see the Edgar Allen Poe house since I've always been a fan. And I've already seen the Constitution Center and Liberty Bell, so I won't be repeating those. Any other suggestions? Stuff to see? Places to eat?