Barcelona, Catalonia, Spain
Freiburg, Baden-Württemberg, Germany
Bogotá, Bogota, Colombia
Thessaloniki, Greece
Dresden, Saxony, Germany
Ortenberg, Baden-Wuerttemberg, Germany
Is-sur-Tille, Bourgogne Franche-Comté, France
Zaragoza, Aragon, Spain
Vilnius, Vilnius, Lithuania
Berkeley, CA, USA
