Tour Valley Forge National Historical Park at your own pace with The Encampment Store's audio tours and guides! The Encampment Store is a nonprofit partner of Valley Forge National Historical Park, and a portion of audio tour proceeds goes back to Valley Forge NHP. The content has been reviewed with the Park staff for accuracy. We suggest 60-90 minutes for our driving tour, and 2 hours for our cycling tour (3 hours with Headquarters extension). All tours provide an overview of the winter encampment of 1777-1778, allowing visitors to follow the footsteps of Washington's army in their fight for independence.