The Carnegie Science Center was designed by Tasso Katselas, and in Father Pitt’s opinion the design worked very well for its intended purposes. It had to be flexible enough to house many different kinds of exhibitions. It had to look sciencey. Most important, it had to enthrall children. It does all those things. Old Pa Pitt would never pick this as the most beautiful building on the North Side, but it has been a favorite destination for a generation of Pittsburgh children, many of whom have actually walked out better educated than they were when they walked in.