Pennsylvania National Parks
Appalachian National Scenic TrailConnecticut, Georgia, Massachusetts, Maryland, Maine, North Carolina, New Hampshire, New Jersey, New York, Pennsylvania, Tennessee, Virginia, Vermont, West VirginiaDelaware Water Gap National Recreation AreaNew Jersey, PennsylvaniaLewis & Clark National Historic TrailIowa, Idaho, Illinois, Indiana, Kansas, Kentucky, Missouri, Montana, Nebraska, North Dakota, Ohio, Oregon, Pennsylvania, South Dakota, Washington, West Virginia