Subject Region
United States
190
Tropics
82
Australia
61
England
51
Amazon River Region
50
Great Britain
49
British Columbia
36
India
33
Brazil
30
Canada
29
Europe
29
North America
29
Northwest, Pacific
27
Mexico
24
France
21
California
20
Latin America
20
West (U.S.)
20
Pennsylvania
19
New England
16
Southeast Asia
15
Costa Rica
14
East (U.S.)
14
Germany
14
Southern States
14
Japan
13
Asia
12
Ecuador
12
Spain
12
Africa
11
Black Forest (Germany)
11
Montana
11
Oregon
11
Victoria
11
Alaska
10
Cuba
10
Indonesia
10
Minnesota
10
Scotland
10
Washington (State)
10
California, Northern
9
Espana
9
Ontario
9
China
8
New York (State)
8
North Carolina
8
Northeastern States
8
Soviet Union
8
Virginia
8
Yellowstone National Park
8
more ...