The Allegheny Parkway was a proposed 632-mile (1,017 km) scenic highway, intended to extend from Harpers Ferry, West Virginia, to the Cumberland Gap, to be managed by the National Park Service. It was seen as a complementary project to the Skyline Drive and Blue Ridge Parkway on the east side of the Shenandoah Valley. Despite support from the Park Service, authorizing legislation was never passed and it was never built.