@treyhunner last year I went to the Heinz and Andy Warhol museums, which are nearby and have things you can't see elsewhere.

I also went to Bicycle Heaven, a bit further, I like bikes and thought it was interesting, would describe more as an archive.

I wanted to go to the Museum of Material Failures, but I couldn't check if it'd be open, especially since it's halfway between the airport.

Would suggest www.atlasobscura.com/things-to-do/pittsburgh-pennsylvania/places for more!