| Madison | / Wisconsin, USA / |
| Felixstowe | / England, United Kingdom / |
| Grenoble | / Région Rhône-Alpes, France / |
| Mikkeli | / Itä-Suomen Lääni, Finland / |
| Brescia | / Regione Lombardia, Italy / |
| Wilhelmshaven | / Land Niedersachsen, Germany / |
| Vlaardingen | / Provincie Zuid-Holland, Netherlands / |
| Merced | / California, USA / |
| Michigan City | / Indiana, USA / |
| Mobile | / Alabama, USA / |
| Coquitlam | / British Columbia, Canada / |
| Žatec | / Ústecký Kraj, Czech Republic / |
| New Port Richey | / Florida, USA / |
| Canton | / Massachusetts, USA / |
| Kettering | / England, United Kingdom / |
| Ulsan | / Ulsan Metropolitan City, South Korea / |
| Děčín | / Ústecký Kraj, Czech Republic / |
| Meißen | / Freistaat Sachsen, Germany / |
| Casablanca | / Région du Grand Casablanca, Morocco / |
| Lutherstadt Wittenberg | / Land Sachsen-Anhalt, Germany / |
| Clacton-on-Sea | / England, United Kingdom / |
| Zanesville | / Ohio, USA / |
| Zgorzelec | / Województwo Wielkopolskie, Poland / |
| Agadir | / Région de Souss-Massa-Drâa, Morocco / |
| Melle | / Land Niedersachsen, Germany / |
