Region
17th century
1
Aberdeen (Scotland)
1
Aberdeen Proving Ground (Md.)
2
Abington (Montgomery County : Township)
1
Abqaiq
6
Abraham Lincoln National Heritage Area (Ill.)
2
Absaroka-Beartooth Wilderness (Mont. and Wyo.)
2
Abū Ẓaby
1
Acadia National Park (Me.)
6
Aceh
1
Adams National Historical Park (Quincy, Mass.)
1
Adelaide (S.A.)
2
Adirondack Mountains
1
Admiralty Island
1
Afghanistan
584
Africa
412
Africa, Central
10
Africa, East
5
Africa, Eastern
5
Africa, English-speaking
1
Africa, North
76
Africa, Northeast
1
Africa, Northwest
2
Africa, Southern
32
Africa, Sub-Saharan
130
Africa, West
37
African Union
1
Agate Dam (Or.)
1
Agate Fossil Beds National Monument (Neb.)
1
Agua Caliente Band of Cahuilla Indians of the Agua Caliente Indian Reservation, California
4
Agua Caliente Indian Reservation (Calif.)
1
Agua Prieta (Sonora)
1
Aiken
1
Ak Chin Reservation (Ariz.)
2
Ak-Chin Indian Community
2
Akron
2
Alabama
80
Alabama Hills (Calif.)
1
Alabama River Watershed
1
Alabama-Coushatta Tribes of Texas
1
Alamo (San Antonio, Tex.)
2
Alaska
533
Alaska Highway
1
Alaska Highway Gas Pipeline
2
Alaska Maritime National Wildlife Refuge (Alaska)
1
Alaska Peninsula
3
Alaska Peninsula (Alaska)
2
Alaska Peninsula National Wildlife Refuge (Alaska)
1
Alaska, Gulf of
1
Albania
14
more ...