Great signage in a very antique airport. Surprisingly easy to get around considering that it looks like they haven't remodeled the place since the 70's.
They have some great art installments around the terminals and a lot of what I think could be displays from part of Pittsburgh's history. You have to double back from the baggage carousel area quite a bit if you want to get to the car rental desks, airport hotel, shuttles, or exit.
They actually handle international flights here as well, which is interesting cause the carousels look like they are on their last legs. Everything about the airport is antique. They have a "new" TSA Security checkpoint on departures that you should take cause there are NO lines - but getting there is epic and you travel through construction trailers to get there.