Maastricht, Limburg, Netherlands
Berlin, Berlin, Germany
Amsterdam, Noord-Holland, Netherlands
Barcelona, Catalunya, Spain
Göttingen, Germany
Siegburg, Germany
Haltern am See, North Rhine-Westphalia, Germany
Tallinn, Harju County, Estonia
Leuven, Flanders, Belgium
Duisburg, Nordrhein-Westfalen, Germany
Bengaluru, Karnataka, India
