Being a native Pennsylvanian who did my student teaching on the north side of Pittsburgh, I have been to The Warhol Museum. It is worth a visit. This app comes from the The Warhol Museum and Carnegie Mellon University--a very good combination. The app runs on both iPads and iPhones which makes it quite usable with secondary and college students. I share it with all the my secondary art education student teachers in their required pedagogy course with me.