Vienna, Vienna, Austria
Kavala, Decentralized Administration of Macedonia and Thrace, Greece
Zory, Silesian Voivodeship, Poland
Cerdanyola del Vallès, Catalunya, Spain
Warsaw, Mazovia, Poland
Szczecin, West Pomerania, Poland
Malbork, Pomeranian Voivodeship, Poland
Warsaw, Masovian Voivodeship, Poland
Poznan, Greater Poland, Poland
Oxford, England, United Kingdom of Great Britain and Northern Ireland
Kyiv city, Ukraine
