Incheon, Korea (Republic of)
Mataram, West Nusa Tenggara, Indonesia
Kaiserslautern, Rheinland-Pfalz, Germany
Ostend, Flanders, Belgium
Warsaw, Masovian Voivodeship, Poland
Astana, Kazakhstan
Baku, Baku, Azerbaijan
Częstochowa, Silesian Voivodeship, Poland