Stuttgart, Baden-Württemberg, Germany
Freiburg, Baden-Württemberg, Germany
Heidelberg, Baden-Württemberg, Germany
Vallabrègues, Languedoc-Roussillon, France
Duderstadt, Lower Saxony, Germany
Bielefeld, North Rhine-Westphalia, Germany
Berlin, Berlin, Germany
Tuebingen, Baden-Wuerttemberg, Germany
Göttingen, Niedersachsen, Germany