Region
United States
11
Antarctica
7
Pacific Ocean
5
Canada
4
Poland
4
California
3
China
3
Greece
3
Ireland
3
Israel
3
Maine
3
Outer space
3
Polar regions
3
Polynesia
3
Soviet Union
3
West (U.S.)
3
Alaska
2
Arctic regions
2
Chile
2
Copiapó Region
2
Earth (Planet)
2
France
2
London (England)
2
Louisiana
2
Mars (Planet)
2
Mexico
2
Montréal
2
New Orleans (La.)
2
New York (N.Y.)
2
Philadelphia (Pa.)
2
Philippines
2
Québec (Province)
2
Russia (Federation)
2
Sumatra (Indonesia)
2
Yukon
2
Zimbabwe
2
20th century
1
Admiralty Island (Alaska)
1
Africa
1
Alberta
1
Alps
1
Alps, French (France)
1
Andes Region
1
Argentina
1
Atlantique Nord
1
Australia
1
Bandelier National Monument
1
Bandelier National Monument (N.M.)
1
Berbice
1
Boon Island (Me.)
1
more ...