Riga, Riga, Latvia
Dietzenbach, Hessen, Germany
Barcelona, Catalunya, Spain
Muenster, North Rhine-Westphalia, Germany
Frankfurt am Main, Hessen, Germany
Brussels, Brussels-Capital Region, Belgium
Budapest, Budapest, Hungary
Tuebingen, Baden-Wuerttemberg, Germany
Hamburg, Hamburg, Germany
Laufelfingen, Basel-Country, Switzerland
San Diego, CA, USA