Düsseldorf, Nordrhein-Westfalen, Germany
Ingolstadt, Germany
Mülheim an der Ruhr, North Rhine-Westphalia, Germany
Essen, North Rhine-Westphalia, Germany
Bari, Italy, Metropolitan City of Bari
Izmir, İzmir, Turkey
Košice, Košice Region, Slovakia
Essen, Nordrhein-Westfalen, Germany