Freiburg im Breisgau, Baden-Württemberg, Germany
Shanghai, Shanghai Shi, China
Tampere, Finland
Reykjavík, Capital Region, Iceland
Köln, Nordrhein-Westfalen, Germany
Guangzhou, Guangdong, China
Madrid, Community of Madrid, Spain
Frankfurt am Main, Hessen, Germany
Amsterdam, Noord-Holland, Netherlands
Kharkiv, Kharkiv Oblast, Ukraine
