Dortmund, North Rhine-Westphalia, Germany
Duesseldorf, North Rhine-Westphalia, Germany
Leipzig, Sachsen, Germany
Bremen, Bremen, Germany
Aachen, North Rhine-Westphalia, Germany
Essen, Nordrhein-Westfalen, Germany
Köln, Nordrhein-Westfalen, Germany
Vienna, Vienna, Austria
Poppenbüll, Germany