Detmold, North Rhine-Westphalia, Germany
Karlsruhe, Baden-Württemberg, Germany
Riga, Riga, Latvia
Berlin, Berlin, Germany
Stuttgart, Baden-Württemberg, Germany
Frankfurt am Main, Hessen, Germany
Leipzig, Saxony, Germany
Hong Kong Island, Hong Kong Special Administrative Region, China
Chitosekarasutama , Tokyo, Japan
Szczecin, West Pomerania, Poland
Freiburg im Breisgau, Baden-Wuerttemberg, Germany
Seoul, Seoul
