Region
Germany
57
Europe
17
Italy
14
Allemagne
11
Rome
9
Switzerland
9
Austria
7
Hannover
6
Venice
6
France
5
Germany (East)
4
Greece
4
Hamburg
4
Middle East
4
United States
4
Venice (Italy)
4
Vienna
4
Berlin
3
Egypt
3
Europe, Eastern
3
Germany (West)
3
Hannover (Germany)
3
Japan
3
Karlsruhe
3
Oberwolfach
3
Suisse
3
Aachen
2
Basel
2
Bayreuth
2
Berlin (West)
2
Darmstadt
2
Davos (Switzerland)
2
Hanovre
2
Leipzig
2
Linz
2
Munich
2
New York
2
New York (State)
2
Paris
2
Russia (Federation)
2
Schweiz
2
Soviet Union
2
Stuttgart
2
Turkey
2
20th century
1
21st century
1
Aarau
1
Aarau <2009>
1
Aegean Islands (Greece and Turkey)
1
Africa, Central
1
more ...