Took our 1 year old granddaughter. She loved most of the activities - though clearly in her own way as most of the exhibits are aimed at children at least 3-4 years old. A child can easily spend hours here (at one or more of the many "areas") but their parents will probably want to move on to see what else there is (that's what happened to us). There is an annual family membership that is worth the money (it pays for itself with only 3 visits for 2 parents and 1 child) - but that's partially because it is fairly expensive for a day's visit -- and it bothered me that they charge the regular children's price for a 1 year old. All in all, highly recommended - and as my son said, especially in the hot days of summer!