València, Comunidad Valenciana, Spain
Aarhus, Region of Middle Denmark, Denmark
Istanbul, Istanbul, Turkey
Poznan, Greater Poland, Poland
Bad Kreuznach, Rhineland-Palatinate, Germany
Freiburg im Breisgau, Baden-Wuerttemberg, Germany
Munich, Bavaria, Germany
Traben-Trarbach, Rheinland-Pfalz, Germany
Dortmund, North Rhine-Westphalia, Germany
Pescara, Abruzzo, Italy