Dortmund, North Rhine-Westphalia, Germany
Wuppertal, North Rhine-Westphalia, Germany
Köln, North Rhine-Westphalia, Germany
Kazan, Tatarstan, Russian Federation
Jena, Deutschland, Germany
München, Bayern, Germany
Bochum, North Rhine-Westphalia, Germany
Minden, north rhine westphalia, Germany
Düsseldorf, North Rhine-Westphalia, Germany
Essen, North Rhine-Westphalia, Germany
Aachen, North Rhine-Westphalia, Germany
