Berlin, Berlin, Germany
Bonn, North Rhine-Westphalia, Germany
Eupen, Région wallonne, Belgium
Raeren, Walloon Region, Belgium
Aachen, North Rhine-Westphalia, Germany
Darmstadt, Hesse, Germany
Hannover, Lower Saxony, Germany
Raeren, Liege, Belgium
Eupen, Liege, Belgium
Osnabrück, Lower Saxony, Germany
Cologne, North Rhine-Westphalia, Germany