Region
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Amargosa River Valley (Nev. and Calif.)
1
Amargosa, Vallée de l' (Nev. et Calif.)
1
Amazon River Region
1
Ambon
1
Amboseli National Park
5
Amboseli National Park (Kenya)
2
America
67
American Discovery Trail
2
American Memorial Park
1
American Memorial Park (Northern Mariana Islands)
4
American Samoa
9
Amistad National Recreation Area
7
Amistad National Recreation Area (Tex.)
8
América Latina
1
Anacapa Island (Calif.)
1
Anaho Island National Wildlife Refuge
1
Anahuac National Wildlife Refuge
1
Anahuac National Wildlife Refuge (Tex.)
1
Anchorage
3
Anchorage (Alaska)
2
Andalusia (Spain)
1
Andersonville National Historic Site (Ga.)
1
Andes Region
1
Andrew Johnson National Historic Site (Greeneville, Tenn.)
1
Angeles National Forest
1
Angeles National Forest (Calif.)
1
Angelina County
1
Angelina National Forest
1
Angkor Wat (Angkor)
1
Angola
12
Aniakchak National Monument and Preserve
5
Aniakchak National Monument and Preserve (Alaska)
6
Animas River (Colo. and N.M.)
2
Animas River Watershed (Colo. and N.M.)
4
Antarctica
13
Antietam National Battlefield
8
Antietam National Battlefield (Md.)
15
Antilles, Greater
2
Anuradhapura (District)
1
Anuradhapura (Sri Lanka : District)
1
Apache County
1
Apache National Forest
1
Apache National Forest (Ariz. and N.M.)
3
Apache-Sitgreaves National Forest
22
Apache-Sitgreaves National Forest (Ariz.)
18
Apalachicola National Forest
2
Apalachicola National Forest (Fla.)
1
Apostle Islands (Wis.)
3
Apostle Islands National Lakeshore
7
Apostle Islands National Lakeshore (Wis.)
13
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