Stockholm, Stockholm, Sweden
Oldenburg (Oldenburg), Lower Saxony, Germany
Miribel les Echelles, Isère/Savoie, France
Labenne, Nouvelle-Aquitaine, France
Aachen, North Rhine-Westphalia, Germany
Spijkenisse, Zuid-Holland, Netherlands
Trento, Trentino-Alto Adige/South Tyrol, Italy
Groningen, Groningen, Netherlands
