Berlin, Germany
Sofia, Sofia, Bulgaria
Sofia, Sofia-city, Bulgaria
Riga, Riga, Latvia
Milan, Lombardy, Italy
Varna, Varna, Bulgaria
Premariacco, Friuli-Venezia Giulia, Italy
Spišský Štvrtok, Prešov Region, Slovakia
Thessaloniki, Decentralized Administration of Macedonia and Thrace, Greece
Como, Lombardia, Italy
Heidelberg, Baden-Wuerttemberg, Germany
Istanbul, Istanbul, Turkey