 |
| Nation | State | City |
| Korea | Gangwondo | Gangneung |
| Greece | South Aegean | Rhodes |
| Korea | Chungcheongnamdo | Gongju |
| Japan | Kansai | Osaka |
| Japan | Chubu | Nagoya |
| Denmark | Region of Southern Denmark | Odense |
| Japan | Tohoku | Akita |
| Japan | Kanto | Tokyo |
| Denmark | Region of Southern Denmark | Billund |
| Denmark | Region of Southern Denmark | Jelling |
| Korea | Gangwondo | Chuncheon |
| Croatia | Zagreb | Zagreb |
| Korea | Daejeon | Daejeon |
| Korea | Chungcheongnamdo | Buyeo |
| Norway | Nordland | Brønnøysund |
| Croatia | Czech | Denmark |
| Finland | Greece | Iceland |
| Ireland | Japan | Korea |
| Liechtenstein | Netherlands | New Zealand |
| Norway | Peru | Spain |
| Sweden | Swiss | USA |