Wow, what fun!! We took our 15 mo old and she LOVED it. We spent the most time on the third floor where most of the youngling activities took place. There's a grocery shopping area where they can pretend buy groceries. We had a lot of fun with that! They had some pretty international food items which I thought was cute. It's definitely a place for kids of all ages. Not so much a museum as it is a huge indoor play park. That's my opinion anyway.
The only reason I'm rating this 4 stars is the lack of food. There is pre-made stand that sells sandwiches, fruit, salad and kid friendly items but no restaurant. Just a heads up for you parents who don't like to cook or bring brown bags (i.e. me). It's not that great so in the future, I would cut the trip short or have a lunch packed.
Definitely 5 stars for fun.