Region
United States
187
Colorado
100
Timucuan Ecological and Historic Preserve (Jacksonville, Fla.)
10
Florida
8
West (U.S.)
8
New Mexico
7
Alaska
6
China
6
Louisiana
6
United States Highway 66
6
California
5
Cane River Creole National Historical Park (La.)
5
Maryland
4
Natchitoches Parish
4
Natchitoches Parish (La.)
4
Arizona
3
Bolivia
3
Bulgaria
3
Cyprus
3
Duval County
3
Italy
3
John H. Chafee Blackstone River Valley National Heritage Corridor (Mass. and R.I.)
3
Klondike Gold Rush National Historical Park (Skagway, Alaska, and Seattle, Wash.)
3
Mississippi River Region
3
Pennsylvania
3
Skagway
3
Skagway (Alaska)
3
Tennessee
3
Virginia
3
Washington (State)
3
Albania
2
Aurora
2
Blackstone River Valley (Mass. and R.I.)
2
Bodie Region
2
Central City
2
Denver
2
El Salvador
2
Europe
2
Frederick County
2
Gettysburg National Military Park
2
Gettysburg National Military Park (Pa.)
2
Greece
2
Hawaii
2
Hyde Park (Dutchess County)
2
India
2
Jacksonville
2
Magnolia Plantation (Natchitoches Parish, La.)
2
Martin Luther King, Jr., National Historic Site (Atlanta, Ga.)
2
Mississippi
2
New York (State)
2
more ...