Jeju-si, Jeju-do, Korea (Republic of)
Dortmund, North Rhine-Westphalia, Germany
Jeju, Jeju-do, South Korea
Basel, Switzerland
Nürtingen, Germany
Arusha, Tanzania, +255
Chuncheon-si, Gangwon-do, Korea (Republic of)
Bremen, Bremen, Germany
Winterthur, Zürich, Switzerland
Berlin, Berlin, Germany
Augsburg, Bavaria, Germany
