Region
Arizona
16
California
14
Pennsylvania
13
United States
12
Colorado
11
Massachusetts
11
Washington (D.C.)
11
Alaska
10
Utah
10
Missouri
9
Washington (State)
9
Maryland
7
Montana
7
New Jersey
7
New York (State)
7
Texas
7
Virginia
7
West Virginia
7
Arkansas
6
Florida
6
New Mexico
6
South Dakota
6
Crater Lake National Park (Or.)
5
Michigan
5
Olympic National Park
5
Olympic National Park (Wash.)
5
Voyageurs National Park (Minn.)
5
Wyoming
5
Yosemite National Park (Calif.)
5
Delaware Water Gap National Recreation Area (N.J. and Pa.)
4
Glacier National Park (Mont.)
4
Gulf Islands National Seashore (Fla. and Miss.)
4
Harpers Ferry National Historical Park
4
Idaho
4
Minnesota
4
New York
4
Rock Creek Park (Washington, D.C.)
4
Rocky Mountain National Park (Colo.)
4
Salem Maritime National Historic Site (Mass.)
4
West (U.S.)
4
White House Gardens (Washington, D.C.)
4
Buffalo National River (Ark.)
3
Canyon de Chelly National Monument (Ariz.)
3
Cape Cod National Seashore
3
Cape Cod National Seashore (Mass.)
3
Craters of the Moon National Monument (Idaho)
3
Denali National Park and Preserve (Alaska)
3
Fort Davis National Historic Site (Tex.)
3
Gateway National Recreation Area (N.J. and N.Y.)
3
Georgetown-Silver Plume Historic District
3
more ...