Gliwice, Silesia, Poland
Warsaw, Masovian Voivodeship, Poland
Belgrade, Central Serbia, Serbia
Dar es Salaam, Dar es Salaam, Tanzania, United Republic of
Porto, Porto District, Portugal
Prague, Prague, Czechia
Madrid, Spain
Baden, Aargau, Switzerland
Skopje, Skopje, Macedonia (the former Yugoslav Republic of)
Zagreb, City of Zagreb, Croatia
Ljubljana, Osrednjeslovenska, Slovenia
Kongens Lyngby, Gladsaxe Municipality, Denmark