Adult $15. And (2-18) $12. Under two free
I wouldn't know because I am an member. If I were you I would go to the museum to see if you like it, and if you do than get a membership, so every time you go to the museum you wouldn't have to pay the admission fee.
It varies with available discounts and memberships, as well as "extra" features and options. I recommend to check the website (and call if need be) for the most clear answers.
Depending on if you just visit museum or you get combo tickets 15 is General... think movie and admission is about $21
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