Ludwigsburg, Baden-Württemberg, Germany
Vaasa, Ostrobothnia, Finland
Riga, Riga, Latvia
Sztum, Pomerania, Poland
Salzburg, Salzburg, Austria
Sofia, Sofia, Bulgaria
Jakobstad, Ostrobothnia, Finland
Karlsruhe, Baden-Wuerttemberg, Germany
Tampere, Pirkanmaa, Finland
Milano, Lombardia, Italy
Chiayi, Chiayi, Taiwan