Jake P.
Yelp
When I was in college, I took a class on Fairmount Park (yay, liberal arts)... and ended up here.
This is a scenic, beautiful revolutionary mansion that has amazing artifacts, and sits on the oldest, old money hill in Philly. It's amazing, if you get a tour guide, what they can tell you about the city back then. It's not a high-octane site... but for slower paced history, art, and civic lovers, this is an oft overlooked place to spend a sunny afternoon.