National Liberty Museum: Family Pass. Let Freedom Ring and do it by visiting the National Liberty Museum, which includes 78 exhibits, 179 works of contemporary art, and stories of 2,000 heroes dedicated to preserving Americas heritage of freedom by fostering good character, civic responsibility and respect for all people. Bid on tickets for 4 to the National Liberty Museum, located at 321 Chestnut Street. And receive a bonus book, The Art of Liberty, featuring a tour of the exhibitions and collections of the National Liberty Museum (value $25). Open 7 days a week memorial Day through Labor Day, closed Mondays the remainder of the year.  www.libertymuseum.org