Copenhagen, Capital Region of Denmark, Denmark
Ludwigsburg, Germany
Siegen, Nordrhein-Westfalen, Germany
Freiburg im Breisgau, Baden-Wuerttemberg, Germany
Vienna, Vienna, Austria
Konstanz, Baden-Württemberg, Germany
Hannover, Lower Saxony, Germany
Hamburg, Hamburg, Germany
Rotterdam, Zuid-Holland, Netherlands
Dresden, Sachsen, Germany
