Dresden, Saxony, Germany
Aachen, North Rhine-Westphalia, Germany
Philadelphia, PA, USA
Aachen, Nordrhein-Westfalen, Germany
Wissmannsdorf, Rhineland-Palatinate, Germany
Essen, North Rhine-Westphalia, Germany
Ludwigsburg, Baden-Wuerttemberg, Germany
Oldenburg, Niedersachsen, Germany
Stuttgart, Baden-Württemberg, Germany
Dortmund, North Rhine-Westphalia, Germany
Berlin, Berlin, Germany
Basel, Basel-Stadt, Switzerland