Region
United States
407
California
22
Colorado
20
Hawaii
16
West (U.S.)
13
China
6
India
6
New York
6
New York (State)
6
Arizona
5
Nevada
5
North America
5
Texas
5
United States Virgin Islands
5
Kansas
4
Developing countries
3
Europe
3
Greensburg
3
Las Vegas
3
Massachusetts
3
Michigan
3
Nebraska
3
Seattle
3
Utah
3
Washington (State)
3
Asia
2
California, Southern
2
Denver
2
East (U.S.)
2
Louisiana
2
Maine
2
Maryland
2
Minnesota
2
Naval Station Newport (R.I.)
2
New Orleans
2
North Carolina
2
Oklahoma
2
Pennsylvania
2
Puerto Rico
2
San Diego
2
Wyoming
2
Zion National Park
2
Afghanistan
1
Alaska
1
American Samoa
1
Amundsen Scott South Pole Station
1
Annapolis
1
Antarctica
1
Austin
1
Bhutan
1
more ...