Barcelona, Catalonia, Spain
San Leandro, California, United States
Aalter, Vlaanderen, Belgium
Nanning, Guangxi Zhuang Autonomous Region, China
Freiburg im Breisgau, Baden-Wuerttemberg, Germany
Bonn, Nordrhein-Westfalen, Germany
Istanbul, Istanbul, Turkey
Daejeon, Daejeon, South Korea
