If you get the chance, I'd suggest the statue of liberty prank. It's a miniature statue in the middle of the river(idk which river) along 322. Whenever I travel up north, I'll stop and take a look.

There's a lot of rumors about the statue, but the real story is it was a prank. Someone went around collecting venetian(iirc) blinds, and used them to sculpt the statue. Late at night they snuck it out and planted it in the middle of the river. It's been there ever since, and once had to be rebuilt I believe.

Aside from that, PA has a very beautiful scene of nature. A hike would be nice.