I always begged to go here as a kid and for a while I had a family membership. What was great about seeing it again recently on vacation was that while there were many new exhibits, there were a a few displays and exhibits still there that I remembered from my childhood visits. Mathematica has barely changed. No more awesome sound-meter wall, 60-foot wave tank (there is a 10-foot one), tic-tac-toe on a touch tone phone, and ComputerPlace is where The Brain used to be. Also, a few of the remains of the once-great Computer Museum are housed on the third floor overlooking the Van de Graff generator.