| Oberhausen | / Rheinland-Pfalz, Germany / |
| Göttingen | / Land Niedersachsen, Germany / |
| Zgorzelec | / Województwo Dolnośląskie, Poland / |
| Bar | / Opština Žabljak, Montenegro / |
| Brasília | / Distrito Federal, Brazil / |
| Florida Ridge | / Florida, USA / |
| Chicago Heights | / Illinois, USA / |
| Ravenna | / Regione Emilia-Romagna, Italy / |
| Detmold | / Land Nordrhein-Westfalen, Germany / |
| Freiberg | / Freistaat Sachsen, Germany / |
| Solingen | / Land Nordrhein-Westfalen, Germany / |
| Gelsenkirchen | / Land Nordrhein-Westfalen, Germany / |
| Landshut | / Freistaat Bayern, Germany / |
| Hof | / Freistaat Bayern, Germany / |
| Witten | / Land Nordrhein-Westfalen, Germany / |
| Darmstadt | / Land Hessen, Germany / |
| Aberdeen | / Scotland, United Kingdom / |
| Breda | / Provincie Noord-Brabant, Netherlands / |
| Quito | / Provincia de Pichincha, Ecuador / |
| Tiberias | / Israel, Israel / |
| Utrecht | / Provincie Utrecht, Netherlands / |
| Denver | / Colorado, USA / |
| Erlangen | / Freistaat Bayern, Germany / |
| Arad | / Israel, Israel / |
| Acre | / Israel, Israel / |
