Region
California
11
Arizona
10
Virginia
7
Grand Canyon National Park
6
Grand Canyon National Park (Ariz.)
6
North Dakota
6
Theodore Roosevelt National Park
6
Alaska
4
Colorado
4
Florida
4
Shenandoah National Park
4
Shenandoah National Park (Va.)
4
Theodore Roosevelt National Park (N.D.)
4
Utah
4
Washington (State)
4
Michigan
3
New Mexico
3
Tennessee
3
Texas
3
Yellowstone National Park
3
Arches National Park
2
Arches National Park (Utah)
2
Glacier National Park
2
Glacier National Park (Mont.)
2
Golden Gate National Recreation Area
2
Golden Gate National Recreation Area (Calif.)
2
Grand Teton National Park
2
Grand Teton National Park (Wyo.)
2
Idaho
2
Lake Clark National Park and Preserve
2
Lake Clark National Park and Preserve (Alaska)
2
Maine
2
Montana
2
Oregon
2
United States
2
White Sands National Monument
2
Wyoming
2
Acadia National Park
1
Acadia National Park (Me.)
1
Alabama
1
Amistad National Recreation Area
1
Amistad National Recreation Area (Tex.)
1
Big Bend National Park
1
Big Bend National Park (Tex.)
1
Big Cypress National Preserve
1
Big Cypress National Preserve (Fla.)
1
Big South Fork National River and Recreation Area (Tenn. and Ky.)
1
Biscayne National Park
1
Biscayne National Park (Fla.)
1
Black Canyon of the Gunnison National Park
1
more ...