What a great treat to have in Vegas! Our family really enjoyed ourselves here. They have lots of variety in their exhibits and from the looks of their schedule it appears that there is always something different going on. Most of the downstairs was closed off the day we visited because they were changing some exhibits around, but we still managed to spend nearly two hours here so it would have been even longer if the other section was opened up. This place will now be on our itinerary for every Vegas trip - well at least the ones where we take the kids! :)