Established: October 21, 1999 Location: Colorado Area: 32,950 acres Visitation (2017): 307,143 Visitation Increase Since 2000: 60.4% National Park Service Official Website
Established: February 25, 1928 Location: Utah Area: 35,835 acres Visitation (2017): 2,571,684 Visitation Increase Since 2000: 133.9% National Park Service Official Website
