Region
United States
1,039
Colorado
19
Great Britain
12
North America
10
Alaska
6
California
6
Moon
6
New Mexico
6
Africa
5
Australia
5
China
5
Europe
5
Oregon
5
West (U.S.)
5
Asia
4
Iowa
4
Maryland
4
Western Hemisphere
4
Arizona
3
Florida
3
Pacific Area
3
Washington (State)
3
Arctic Ocean
2
Brazil
2
Caribbean Area
2
Delaware River Watershed (N.Y.-Del. and N.J.)
2
Developing countries
2
European Union countries
2
Foreign countries
2
Great Basin
2
India
2
North Pacific Ocean
2
Southern States
2
Sun
2
Tropics
2
Utah
2
Allegheny Mountains
1
Arctic regions
1
Arlington
1
Atlantic Coast (America)
1
Atlantic Coast (U.S.)
1
Baltimore
1
Bering Sea
1
Brandywine Creek (Pa. and Del.)
1
Broward County
1
California, Northern
1
Canada
1
Caucasus, South
1
Chattahoochee River
1
Coconino National Forest
1
more ...