| Indianapolis | / Indiana, USA / |
| Urumqi | / Xinjiang Uygur Autonomous Region, China / |
| Świnoujście | / Województwo Zachodniopomorskie, Poland / |
| Ruda Śląska | / Województwo Śląskie, Poland / |
| Chicago Lawn | / Illinois, USA / |
| Maputo | / Província de Maputo, Mozambique / |
| Lausanne | / Canton de Vaud, Switzerland / |
| Firenze | / Toscana, Italy / |
| Arad | / Judeţul Arad, Romania / |
| Basel | / Kanton Basel-Stadt, Switzerland / |
| Bolesławiec | / Województwo Dolnośląskie, Poland / |
| Guangzhou | / Guangdong Province, China / |
| Asti | / Regione Piemonte, Italy / |
| Sharjah | / Ash Shāriqah, United Arab Emirates / |
| Pesaro | / Regione Marche, Italy / |
| Ostróda | / Województwo Warmińsko-Mazurskie, Poland / |
| Vancouver | / Washington, USA / |
| Pisa | / Toscana, Italy / |
| Ipswich | / England, United Kingdom / |
| Sevilla | / Andalucía, Spain / |
| Murcia | / Región de Murcia, Spain / |
| Kutno | / Województwo Łódzkie, Poland / |
| Siedlce | / Województwo Mazowieckie, Poland / |
| Most | / Ústecký Kraj, Czech Republic / |
| Iaşi | / Judeţul Iaşi, Romania / |
