Region
Adirondack Mountains (N.Y.)
1
Africa
5
Africa, North
1
Albany (N.Y.)
1
America
1
American Bottom
1
American Bottom (Ill.)
1
Arab countries
2
Argentina
1
Asia, Central
1
Atlantic Beach
1
Atlantic Beach (S.C.)
1
Australia
1
Austria
2
Berlin
1
Berlin (Germany)
1
Boston
1
Boston (Mass.)
1
Brazil
3
Brescia
1
Brescia (Italy)
1
Buckingham County
1
Buckingham County (Va.)
1
Bulgaria
1
Cahokia Mounds State Historic Park (Ill.)
1
Cameroon
1
Capitol Hill (Washington, D.C.)
1
Chengdu
1
Chengdu (China)
1
Chihuahua (Chihuahua)
1
Chihuahua (Chihuahua, Mexico)
1
China
4
Confederate States of America
2
Cuba
2
Denmark
1
England
7
Europe
4
European Union countries
1
Florence
1
Florence (Italy)
1
Florida
1
France
9
Gaza Strip
1
Georgia
1
Germany
14
Germany (East)
1
Germany (West)
2
Great Britain
26
Guatemala
1
Haiti
1
more ...