If you're traveling to Pittsburgh, make this a stop on your trip!! The building is beautiful, it feels like you have stepped into Hogwarts. The architecture is incredible, it is absolutely lovely.
They also have these nationality rooms, which are these amazingly designed classrooms to mimic classrooms around the world. They are beautiful and intriguing. Some we were able to access for free while others you have to go on the tour to view because they kept them locked. I think the tour was only $5 but we did not do it, however if you're visiting I would suggest it, the classrooms are amazing.