Overkalix, Norrbotten, Sweden
Kuopio, Northern Savonia, Finland
Duisburg, Germany
Valladolid, Castilla y León, Spain
Vitoria-Gasteiz, Basque Country, Spain
Barcis, Friuli-Venezia Giulia, Italy
Extremadura, Spain
Lazkao, Euskadi, Spain
Gyöngyös, Heves County, Hungary
Serdica, Sofia City Province, Bulgaria
Jyväskylä, Finland
Piacenza, Emilia-Romagna, Italy
