Established: November 10, 1978 Location: North Dakota Area: 70,447 acres Visitation (2017): 708,003 Visitation Increase Since 2000: 64.0% National Park Service Official Website
Established: August 2, 1956 Location: U.S. Virgin Islands Area: 14,689 acres Visitation (2017): 304,408 Visitation Increase Since 2000: -56.8% National Park Service Official Website
