Cluj-Napoca, Cluj County, Romania
Parnu, Parnu county, Estonia
Palencia, Palencia, Spain
Aarhus, Central Denmark Region, Denmark
Poznan, Greater Poland, Poland
Reggio Emilia, Emilia-Romagna, Italy
Leipzig, Germany
Tübingen, Baden-Württemberg, Germany
Den Hague, Netherlands
Poznań, Greater Poland Voivodeship, Poland
Tallinn, Harju County, Estonia
Bratislava, Bratislava Region, Slovakia