Bochum, North Rhine-Westphalia, Germany
Essen, Nordrhein-Westfalen, Germany
Düsseldorf, North Rhine-Westphalia, Germany
Düsseldorf, Nordrhein-Westfalen, Germany
Bochum, Nordrhein-Westfalen, Germany
Muelheim an der Ruhr, North Rhine-Westphalia, Germany