Freiburg, Baden-Württemberg, Germany
Karlsruhe, Baden-Württemberg, Germany
Mannheim, Baden-Württemberg, Germany
Toronto, Ontario, Canada
Bad Schwalbach, Hessen, Germany
Freiburg im Breisgau, Baden-Württemberg, Germany
Berlin, Berlin, Germany
Erfurt, Thuringia, Germany
Seoul, Korea (Republic of)
Helsinki, Uusimaa, Finland
Hanoi, Hanoi City, Vietnam