| Olomouc | / Olomoucký Kraj, Czech Republic / |
| Chennai | / State of Tamil Nādu, India / |
| Shanghai | / Shanghai Municipality, China / |
| Chomutov | / Ústecký Kraj, Czech Republic / |
| Jakarta | / Daerah Khusus Ibukota Jakarta Raya, Indonesia / |
| Stalowa Wola | / Województwo Podkarpackie, Poland / |
| Grodzisk Mazowiecki | / Województwo Mazowieckie, Poland / |
| Piotrków Trybunalski | / Województwo Łódzkie, Poland / |
| Lappeenranta | / Uusimaa, Finland / |
| Ljubljana | / Mestna Občina Ljubljana, Slovenia / |
| Entebbe | / Kalangala District, Uganda / |
| Oulu | / Oulun Lääni, Finland / |
| Rabat | / Région de Rabat-Salé-Zemmour-Zaër, Morocco / |
| Minden | / Rheinland-Pfalz, Germany / |
| Hamm | / Freie und Hansestadt Hamburg, Germany / |
| Bordeaux | / Région Centre, France / |
| Tczew | / Województwo Pomorskie, Poland / |
| Polkowice | / Województwo Dolnośląskie, Poland / |
| Rybnik | / Województwo Śląskie, Poland / |
| Olsztyn | / Województwo Śląskie, Poland / |
| Konin | / Województwo Śląskie, Poland / |
| Bergen | / Hordaland Fylke, Norway / |
| Salerno | / Regione Calabria, Italy / |
| Pescara | / Regione Abruzzo, Italy / |
| Mondovì | / Regione Piemonte, Italy / |
