The one thing we really wanted to do before we left Pittsburgh was visit the Carnegie Science Center. We finally made it the Saturday before we left. They had a really great Tot Lot with activities specifically designed for children 6 and under. Levi loved the water table and the ball factory. Another highlight was the real submarine that we got to tour. We all had a lot of fun, so I'm glad we made it there before we left the 'Burgh.