Cambridge, MA, USA
Köln, Nordrhein-Westfalen, Germany
Berlin, Berlin, Germany
Cologne, North Rhine-Westphalia, Germany
Ecublens, Canton of Vaud, Switzerland
USA
Tönisvorst, North Rhine-Westphalia, Germany
Lyon, Rhone-Alpes, France
Frankfurt am Main, Hessen, Germany
Kassel, Hesse, Germany
Oslo, Oslo, Norway
Mainz, Rhineland-Palatinate, Germany