Freiburg, Baden-Württemberg, Germany
Hamburg, Hamburg, Germany
Essen, Nordrhein-Westfalen, Germany
Witzenhausen, Hesse, Germany
Kleve, North Rhine-Westphalia, Germany
Schwelm, North Rhine-Westphalia, Germany
Oldenburg (Oldenburg), Lower Saxony, Germany
Úny, Komárom-Esztergom, Hungary