We decided to visit the California Science Center in Los Angeles. We had a great time. They had a great exhibit of the space shuttle Endeavour, and it's quite an awe inspiring sight seeing the huge shuttle up close. The science center also offers a giant fish tank where a scuba diver feeds some of the fish and answer questions about the fish from the audience -- that was fun. There are also a bunch of play areas for younger kids. There is a Pixar exhibit going on, but that is an added cost, and given that we did not have enough time, we decided to skip it.