Was at a Ripley's in Canada in 1989 with my children, ages 8 and 11. Both thoroughly enjoyed it and they spent almost 2 hours exploring. Last week my in laws wanted to treat my grandson so we went to Ripley's in the inner harbor. Whereas the adults in the party were entertained and although a bit pricey for adults, we were okay with the experience, it wasn't worth it for my 4 year old grandson. Aside from being scared by the tall man, and pushing a few buttons for the interactive exhibits and the thermal imaging room, he had no interest or appreciation for the other exhibits which were over his head. He had a much better time in the science museum down the street. My suggestion would be to change the children's age which is presently 4-12 to at least 6-12 before charging them $11.99 for admission.