Region
United States
32
France
8
California
2
Colorado
2
Europe
2
Florida
2
Minnesota
2
New Jersey
2
New Mexico
2
Wyoming
2
19th century
1
Appalachian Region
1
Appalachian Trail
1
Appomattox Court House National Historical Park (Va.)
1
Arizona
1
Arkansas
1
Bandelier National Monument
1
Bandelier National Monument (N.M.)
1
Big Cypress National Preserve
1
Big Cypress National Preserve (Fla.)
1
Brown v. Board of Education National Historic Site (Topeka, Kan.)
1
Canada
1
Castillo de San Marcos National Monument
1
Castillo de San Marcos National Monument (Saint Augustine, Fla.)
1
Cedar Breaks National Monument
1
Cedar Breaks National Monument (Utah)
1
Colorado National Monument (Colo.)
1
Craters of the Moon National Monument (Idaho)
1
Craters of the Moon National Preserve (Idaho)
1
Developing countries
1
Devils Tower National Monument
1
Devils Tower National Monument (Wyo.)
1
Florissant Fossil Beds National Monument
1
Florissant Fossil Beds National Monument (Colo.)
1
Fossil Butte National Monument
1
Fossil Butte National Monument (Wyo.)
1
Franklin D. Roosevelt Lake (Wash.)
1
Gateway National Recreation Area (N.J. and N.Y.)
1
George Washington Carver National Monument
1
George Washington Carver National Monument (Mo.)
1
Georgia
1
Gila Cliff Dwellings National Monument (N.M.)
1
Hubbell Trading Post National Historic Site (Ganado, Ariz.)
1
Idaho
1
Kansas
1
Kennesaw Mountain National Battlefield Park (Ga.)
1
Lake Roosevelt National Recreation Area (Wash.)
1
Lava Beds National Monument
1
Lava Beds National Monument (Calif.)
1
Little Rock Central High School National Historic Site (Little Rock, Ark.)
1
more ...