Köln, Nordrhein-Westfalen, Germany
Sheffield, England, United Kingdom
Cedar Rapids, IA, USA
Enschede, Overijssel, Netherlands
Göttingen, Lower Saxony, Germany
Berlin, Berlin, Germany
Münster, North Rhine-Westphalia, Germany
Emden, Lower Saxony, Germany
Moormerland, NDS, Germany
Deventer, Overijssel, Netherlands
Mannheim, Baden-Württemberg, Germany