Bucharest, Bucharest, Romania
Minsk, Minsk Region, Belarus
Varna, Varna, Bulgaria
Karlsruhe, Baden-Württemberg, Germany
Istanbul, Istanbul, Turkey
Köln, Nordrhein-Westfalen, Germany
Sofia, Sofia-city, Bulgaria
Warsaw, Mazovia, Poland
Berlin, Berlin, Germany
Shumen, Shumen Province, Bulgaria