Stockholm, Sweden
Maastricht, Limburg, Netherlands
Groningen, Groningen, The Netherlands
Leuven, Flanders, Belgium
Salamanca, Castilla y León, Spain
Warsaw, Mazovia, Poland
Geneva, Geneva, Switzerland
Västerbottens län, Sweden
Groningen, Groningen, Netherlands
Kranj, Kranj, Slovenia
Freiburg im Breisgau, Baden-Wuerttemberg, Germany