Nationality Rooms
I love taking visitors to the Nationality Rooms at the Cathedral of Learning. There is something unique about each of the 27 rooms, and it's something that no other city has. My favorite is the Early American Room, although I don't think you can do anything other than look through the window at this room. There's a secret room in the Early American Room...used for hiding on the frontier. But there other other amazing rooms to see as well. The best day to tour the rooms is on Sunday, but make sure you call ahead to find out the hours and availability. They decorate some of the rooms for Christmas, so that's a good season to visit the rooms.