Bochum, North Rhine-Westphalia, Germany
Düsseldorf, Nordrhein-Westfalen, Germany
Duisburg, Nordrhein-Westfalen, Germany
Berlin, Berlin, Germany
Bonn, North Rhine-Westphalia, Germany
Milano, Lombardia, Italy
Frankfurt am Main, Hessen, Germany
Stockholm, Stockholm County, Sweden
Dortmund, North Rhine-Westphalia, Germany
Essen, North Rhine-Westphalia, Germany