Lawrence Hall of Science

If you want an alternative to the exploratorium the Lawernce Hall of Science has some activities that rival, if not beat exhibits at the exp. My favorites include a mystery room where you use really simple forensic science to determine a guilty member of a panel. They regularly have special exhibits which are excellent quality and lots of fun. The drive up is a little long and treacherous but this place is definetly worth going to and getting a yearly pass