Piliscsaba, Pest, Hungary
Budapest, Hungary
Copenhagen, Capital Region of Denmark, Denmark
Úny, Komárom - Esztergom, Hungary
Budapest, Budapest, Hungary
Freiburg, Baden-Württemberg, Germany
Duisburg, Nordrhein-Westfalen, Germany
Goettingen, Lower Saxony, Germany
La Chaux-de-Fonds, Canton of Neuchâtel, Switzerland