Celje, Savinjska, Slovenia
Belgrade, City of Belgrade, Serbia
Tata, Komárom-Esztergom, Hungary
Maribor, Podravska, Slovenia
Velenje, Savinjska, Slovenia
Ljubljana, Ljubljana, Slovenia
Borås, Västra Götalands län, Sweden
Lisbon, Lisboa, Portugal
Wuppertal, Nordrhein-Westfalen, Germany
Mainz, Rhineland-Palatinate, Germany
Lenart, Podravska, Slovenia
Barreiro, Setubal, Portugal
