Gliwice, Silesian Voivodeship, Poland
Sofia, Sofia City Province, Bulgaria
Delft, South Holland, Netherlands
Maia, Porto District, Portugal
Verona, Veneto, Italy
Athens, Attica, Greece
Mostar, Federation of Bosnia and Herzegovina, Bosnia and Herzegovina
Warsaw, Masovian Voivodeship, Poland
Valladolid, Castile and León, Spain
Thessaloniki, Greece
