Rommerskirchen, North Rhine-Westphalia, Germany
Rostock, Mecklenburg-Western Pomerania, Germany
Berlin, Berlin, Germany
Wesel, North Rhine-Westphalia, Germany
Thessaloniki, Decentralized Administration of Macedonia and Thrace, Greece
Goettingen, Lower Saxony, Germany
Brussels, Brussels, Belgium
Ludwigshafen am Rhein, Rhineland-Palatinate, Germany
Thessaloniki, Makedonia Thraki, Greece