15 for child, 20 for adult.
It's $20 per person. They give 10% discount to Vets and first responders. It's about a 90 minute tour. If you've never been I recommend it.
It was a while back I think less than 20$
45min total time...you go down the flight of stairs hang out at the base of the stairs for a while then go back...careful because goin up will take a good deal of energy....take your time
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