Established: December 9, 1924 Location: Arizona Area: 35,422 acres Visitation (2017): 236,454 NPS Official Website
Established: December 5, 2008 Location: Hawaii Area: 6,310 acres Visitation (2017): 1,947,495 NPS Official Website
Established: December 19, 1919 Location: Colorado Area: 34 acres Visitation (2017): ~60,000 NPS Official Website
