Region
Afghanistan
1
Africa
5
Alabama
2
Albania
1
Appalachian Region
1
Arches National Park (Utah)
2
Argentina
2
Atlanta
1
Atlanta (Ga.)
1
Austin
1
Australia
5
Balkan Peninsula
1
Biscayne National Park (Fla.)
1
Bosnia and Herzegovina
1
Buffalo
1
Bulgaria
1
California
1
Cambodia
2
China
1
Clark County
2
Croatia
1
Cuba
1
Cyprus
1
Czech Republic
1
Death Valley (Calif. and Nev.)
1
Developing countries
2
Egypt
3
El Salvador
1
Ethiopia
1
Europe
1
Europe, Eastern
1
Florida
2
Georgia
20
Germany
1
Great Britain
4
Greece
1
Géorgie (État)
1
Horn of Africa
1
Hungary
1
Indiana
2
Iowa
1
Iran
7
Israel
9
Jimmy Carter National Historic Site (Plains, Ga.)
3
Jimmy Carter National Historical Park (Plains, Ga.)
1
Korea
1
Korea (North)
2
Korea (South)
1
Kosovo
1
Latin America
2
more ...