Frankfurt, Hesse, Germany
Växjö, Kronoberg County, Sweden
Luebeck, Schleswig-Holstein, Germany
Ulm, Baden-Württemberg, Germany
Kassel, Hesse, Germany
Paris, Ile-de-France, France
Bonn, North Rhine-Westphalia, Germany
Offenbach, Hessen, Germany
Zurich, Zurich, Switzerland
Kopavogur, Iceland
Muenster, North Rhine-Westphalia, Germany