Region
Abraham Lincoln Birthplace National Historical Park
1
Abraham Lincoln Birthplace National Historical Park (Ky.)
1
Afghanistan
5
Africa
78
Africa South of the Sahara
14
Africa, Central
1
Africa, East
3
Africa, Eastern
3
Africa, French-speaking Equatorial
1
Africa, French-speaking West
1
Africa, North
6
Africa, Southern
3
Africa, Sub-Saharan
4
Africa, West
8
Agua Fria National Monument
1
Agua Fria National Monument (Ariz.)
1
Alabama
15
Alamosa
1
Alaska
26
Aleppo
2
Aleppo (Syria)
2
Aleutian Islands
1
Aleutian World War II National Historic Area (Alaska)
1
Algeria
2
America
17
Americas
1
Amherst
2
Amsterdam
2
Amsterdam (Netherlands)
2
Andalusia
1
Andalusia (Spain)
2
Andes Region
3
Antarctica
2
Antietam National Battlefield (Md.)
1
Anza-Borrego Desert
1
Anza-Borrego Desert (Calif.)
1
Anza-Borrego Desert State Park (Calif.)
1
Appalachian Region
1
Appalachian Region, Southern
1
Appalachian Trail
1
Arab countries
5
Arches National Park
1
Arches National Park (Utah)
1
Arctic Ocean
1
Arctic regions
3
Argentina
2
Arizona
18
Arkansas
5
Arlington
1
Armenia
1
more ...