Pauline

my friend's great suggestions:

1. take a duck tour in philly, that will give you an overview of historic places in philly
http://www.phillyducks.com/

2. spend one day in art museum if you are an art-lover
http://www.philamuseum.org/

3. longwood garden, which was a private garden for some millionare

4. hershey chocalate factory
they have factory tour, and free sample of their chocalate
you can combine this with a trip to armish place
where the dutch people live, those guys are old-fashioned, never use motor vehicles, no electricitym etc, fun to watch
that will make it 5.

6. hui lai zai gao su ni le

last one is so funny, hahaha
laugh to death :D
should know him earlier !!!