I have a 1 yr old and 3 yr old and they had a blast here! We were there as soon as they opened and even after 2 1/2 hrs, we didn't see it all! I will definitely be back with them another time. The water world room was probably my youngest boy's favorite because it was low enough that he could play with the stuff in the water, but not so low that I had to worry about him getting in. They have rain ponchos the kids can put on too so they don't get soaked. I mean don't expect them to stay dry completely, but it was a blast. I saw kids of all ages enjoying the Discovery Museum and even my husband found himself getting into some of the activities. I am excited to go back. Make sure you park in the garage for free parking. Across the street from the museum you still have to pay.