Region
Abraham Lincoln National Heritage Area (Ill.)
2
Abū Sunbul (Egypt)
1
Afghanistan
2
Africa
4
Africa, West
4
Alagnak Wild River
1
Alagnak Wild River (Alaska)
1
Alamos (Sonora)
1
Alamos (Sonora, Mexico)
1
Alaska
8
Alaska, Southeast
1
Albania
3
Alberta
4
Alexandria
1
Alexandria (Egypt)
1
Algeria
2
Allemagne
1
America
2
Anchorage
1
Angkor (Extinct city)
2
Angkor Archaeological Park
2
Angkor Archaeological Park (Cambodia)
1
Antiquities
2
Appalachian Region
1
Arab countries
1
Arabia Mountain National Heritage Area (Ga.)
2
Arabian Peninsula
1
Arctic National Wildlife Refuge
2
Argentina
1
Arizona
6
Armenia (Republic)
2
Aruba
1
Asia
6
Aswān
1
Aswān (Egypt)
1
Athen <2011>
1
Atlantic Coast
2
Atlantic Coast (S.C.)
2
Australasia
1
Australia
18
Austria
2
Bahia (State)
1
Baie James
2
Balkan Peninsula
2
Baltic States
1
Bamiyan Site
1
Bamiyan Site (Afghanistan)
1
Bandiagara Caves (Mali)
2
Bani Kharus Wadi (Oman)
1
Barry M. Goldwater Air Force Range (Ariz.)
1
more ...