Seen this place as I was exiting to go to my hotel. Ticket prices are already good but I found a Groupon for 2 tickets for $21. We went maybe an hour and a half before closing and still didn't walk the entire museum. We got pretty close though. There's just so much fantastic stuff to see and read here. The staff at the front door is nice and any staff member walking the show room with gladly answer any questions you may have. This is definitely a place you should go to get out of the heat for about 3 hours.