The website has your answer. It depends on the age. As of 5/2018 Adult $17.95 Children (3-14) $12.95 Children (2 and under) Free Senior (62+) $14.95 There are apart of the ASTC museum group. If you have a membership at a participating museum you may have a discount or free entry to this museum.
I agree with the above answer. If you have a family of 4 or 5 you may want to consider an annual pass since its only a few dollars more and you can come back as much as you want for a year. There's also a discount on food inside. If you're a BofA customer, you may want to ask what days are free for BofA customers and how it works.
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