Röfingen, Bavaria, Germany
Bonn, Nordrhine-Westfalia, Germany
Villingen-Schwenningen, Baden-Württemberg, Germany
Athens, Greece
Frankfurt am Main, Hessen, Germany
Idar Oberstein, Rheindland-Pfalz, Germany
Wittlich, Rhineland-Palatinate, Germany
Stockholm, Stockholm County, Sweden
Koblenz, Germany
Melle, Flanders, Belgium
Cologne, North Rhine-Westphalia, Germany
