My 14-mos-old twins loved this museum when we went at the beginning of the summer. There is a large water room that is great for many agse (I even saw parents having fun). There ar tables of flowing water full of balls, pipes, and other items that the kids can play with, move around, see cause and effect, etc. My twins loved a separate water tower that was easy for them to reach. They could put their hands in the water, move little balls, etc. There are smocks for the children to wear (but they will get wet!). The one downside is that the floor is wet and shoes will get wet (but I did see someone repeatedly mop the floor and pick up loose balls).
There is a play veterinarian room and pirate ship as well. Another room is just for toddlers (great for us) and made up like pioneer times.
The downside- and this major - there is nearly no parking. We parked on the street at first, where there is a 1-hr limit. I was afraid of getting a ticket. Then a spot opened in the lot, so I was lucky. But they really do need to aquire more parking or add a garage. We went for free through our library, so that was a huge plus.