Amsterdam, Noord-Holland, Netherlands
Warsaw, Mazovia, Poland
Cologne, North Rhine-Westphalia, Germany
Traben-Trarbach, Rheinland-Pfalz, Germany
Munich, Bavaria, Germany
The Hague, South Holland, Netherlands
Cambridge, MA, USA
's-Hertogenbosch, Noord-Brabant, Netherlands
Duisburg, Nordrhein-Westfalen, Germany
Berlin, Berlin, Germany
