Brno, South Moravian Region, Czech Republic
Wrocław, Lower Silesian Voivodeship, Poland
Berlin, Berlin, Germany
Sofia, Sofia, Bulgaria
Poznan, Poland
Administrative unit Maribor, Slovenia
Plovdiv Province, Bulgaria
Pernik, Pernik, Bulgaria
Warsaw, Masovian Voivodeship, Poland
England, United Kingdom of Great Britain and Northern Ireland
Esch-sur-Alzette, Luxembourg, Luxembourg
Cologne, North Rhine-Westphalia, Germany
