Aachen, North Rhine-Westphalia, Germany
Aachen, Nordrhein-Westfalen, Germany
Dayton, OH, USA
Regensburg, Bayern, Germany
Limburg an der Lahn, Hessen, Germany
Tarragona, Catalonia, Spain
Berlin, Berlin, Germany
Lörrach, Baden-Württemberg, Germany
Düsseldorf, North Rhine-Westphalia, Germany