Region
Abangares (Canton)
1
Abernethy (Scotland)
1
Acre
1
Adirondack Mountains Region
1
Adirondack Mountains Region (N.Y.)
1
Africa
12
Africa, North
3
Africa, Sub-Saharan
2
Africa, West
1
Agriculture
1
Aguarico River Valley
1
Aguarico River Valley (Ecuador)
1
Aitōlia kai Akarnania
1
Aitōlia kai Akarnania (Greece)
1
Alaska
10
Alaska (Sud-Est)
1
Alaska Peninsula
1
Alaska, Gulf of (Alaska)
1
Alaska, Gulf of, Region
1
Alaska, Northwest
1
Alaska, Southeast
1
Alberta
6
Alberta, Northern
1
Alps Region
2
Alps, Western
1
Alta Verapaz
1
Amazon River Region
18
Amazon River Valley
2
Amazon Valley
1
America
10
Amérique du Nord
2
Andes
1
Andes Region
3
Andhra Pradesh
1
Andhra Pradesh (India)
1
Angleterre
1
Antarctica
2
Antikythēra Island
2
Antikythēra Island (Greece)
2
Appalachian Region, Southern
5
Aral Sea (Uzbekistan and Kazakhstan)
1
Arctic regions
9
Ardennes
1
Area de Conservación Arenal (Costa Rica)
1
Arizona
8
Asia
8
Athabasca Oil Sands Region
2
Athabasca Oil Sands Region (Alta.)
2
Athabasca Tar Sands (Alta.)
1
Atlantic Coast
1
more ...