Region
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Atatürk Dam (Turkey)
1
Atchafalaya National Heritage Area (La.)
2
Athens
52
Athens (Greece)
16
Atlanta
21
Atlanta (Ga.)
4
Atlantic Coast
4
Atlantic Coast (Middle Atlantic States)
2
Atlantic Coast (New England)
3
Atlantic Coast (South Atlantic States)
3
Atlantic Coast (U.S.)
5
Atlantic Ocean
15
Atlantic Ocean Region
2
Atlantic States
2
Atsugi-shi
1
Attica
1
Auburn
2
Augsburg
1
Augsburg (Germany)
1
Aurora
1
Austin
4
Austin (Chicago, Ill.)
1
Australasia
8
Australia
427
Australia, Northern
1
Austria
282
Ayr (Scotland)
1
Azerbaijan
12
Azov, Sea of (Ukraine and Russia)
1
BRIC countries
7
Babylonia
26
Baden
2
Baden (Germany)
2
Baden (Margraviate)
1
Bahamas
20
Bahrain
9
Bainbridge Island
4
Baja California (Peninsula)
4
Baja California Sur
1
Bakersfield Region
1
Bakken Formation
1
Balkan Peninsula
9
Baltic Sea
11
Baltic States
15
Baltimore
11
Bandiagara Caves (Mali)
2
Bangalore
1
Bangka Island (Kepulauan Bangka Belitung)
1
Bangladesh
26
Barataria Preserve (La.)
2
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