Museums across the country participate in an amazing passport program. This program allows you to gain access to hundreds of museums worldwide for FREE or a discounted price. Your family (2 adults, dependent children) can acquire a membership from Highlands Discovery Museum in Ashland, Ky for $75 for the family for one full year! In our area, this will allow you free admission to COSI (Columbus, Oh), Clay Center (Charleston), Pittsburgh Children’s Museum, and soooo many more.
Check out this link to acquire your membership (or, visit in person): http://highlandsmuseum.com/wp-content/uploads/2015/05/HMDC-membership-form.pdf
This link will give you information on the passport program and the list of participating museums: http://www.astc.org/passport/?country=&state=PA&keywords=