Explore Fort Mifflin, the site of a seven-week siege of American troops by the British Army during the Revolutionary War. Less than a century later, the fort served as both a Confederate and Union prison camp during the Civil War. Take a fascinating tour through two vitally important eras in American History at Fort Mifflin on the Delaware. While the Fort grounds and most buildings are handicapped accessible, several areas are not. Programs will be adapted for those with special needs by calling: 215-685-4167. Visit our website for additional information.