Łódź, Poland
Wroclaw, Lower Silesia, Poland
Dortmund, North Rhine-Westphalia, Germany
Thessaloniki, Decentralized Administration of Macedonia and Thrace, Greece
Wrocław, Lower Silesian Voivodeship, Poland
Kraków, Lesser Poland Voivodeship, Poland
Zielona Gora, Lubusz Voivodeship, Poland
Vilnius, Vilnius, Lithuania
Sofia, Sofia-city, Bulgaria
Vienna, Vienna, Austria
Berlin, Berlin, Germany
Yerevan, Yerevan, Armenia
