(©B. Krist/Visit Philadelphia)
Located on Penn's Landing, this sprawling maritime museum offers interactive exhibits and an operational boat workshop. Just outside, visitors can tour the decks and depths of the cruiser “Olympia” and the World War II submarine “Becuna.” The new hands-on, interactive Citizen Science Lab focuses on the science around the Delaware River as well as the language arts, history and basic engineering. $14-$18; under 3 free. Check website for seasonal hours.