Subject Region
United States
18
Great Britain
8
England
6
Greece
6
Athens (Greece)
4
France
4
Rome
4
New York (State)
3
Athens
2
Venice (Italy)
2
Catskill Mountains
1
Europe
1
Florence (Italy)
1
London (England)
1
Messina (Italy)
1
New York
1
North America
1
Padua (Italy)
1
Philippines
1
Soviet Union
1
Spain
1
Vienna (Austria)
1