My kids love going to BB. I have two kids 3 & 7 and between all of the hands on exhibits and the hometown area we always spend 2-4 hours having a great time. It is a perfect option for winter and rainy days. I know other people mentioned that there was not upkeep on the exhibits... this is somewhat true. They change the exhibits every 6 months or so. After 6 months of play from hundreds and hundreds of kids some of the pieces end up missing or broken. However I still feel that they do a fair job of trying to keep the exhibits working. What really matters is that when we go my kids have a great time and always want to go back again and again!