Region
United States
36
Arizona
31
Colorado
24
California
16
Texas
15
New Mexico
13
New York (State)
13
Alaska
12
North Carolina
12
Virginia
11
Pennsylvania
10
Tallgrass Prairie National Preserve (Kan.)
8
Washington (State)
8
Arkansas
7
Michigan
7
Wyoming
7
Florida
6
Kansas
6
Ohio
6
Big Bend National Park
5
Chesapeake and Ohio Canal National Historical Park
5
Coconino County
5
Hawaii
5
Maine
5
Minnesota
5
Montana
5
Nevada
5
New Jersey
5
Rio Grande (Colo.-Mexico and Tex.)
5
Sleeping Bear Dunes National Lakeshore
5
South Carolina
5
Tallgrass Prairie National Preserve
5
Bandelier National Monument (N.M.)
4
Cape Hatteras National Seashore (N.C.)
4
Dry Tortugas National Park (Fla.)
4
Flight 93 National Memorial (Pa.)
4
Gateway National Recreation Area (N.J. and N.Y.)
4
Golden Gate National Recreation Area (Calif.)
4
Grand Canyon National Park
4
Massachusetts
4
Sleeping Bear Dunes National Lakeshore (Mich.)
4
Washington (D.C.)
4
West (U.S.)
4
Wisconsin
4
Antietam National Battlefield (Md.)
3
Apostle Islands National Lakeshore (Wis.)
3
Big Bend National Park (Tex.)
3
Blue Ridge Parkway (N.C. and Va.)
3
Cabrillo National Monument (San Diego, Calif.)
3
Colorado Plateau
3
more ...