| Aachen, North Rhine-Westphalia Arnstadt, Thuringia Bamberg, Bavaria Berlin, Berlin Bonn, North Rhine-Westphalia Bremen, Bremen Cologne, North Rhine-Westphalia Dortmund, North Rhine-Westphalia | Dresden, Saxony Düsseldorf, North Rhine-Westphalia Essen, North Rhine-Westphalia Frankfurt am Main, Hesse Freiburg, Baden-Württemberg Hamburg, Hamburg Hannöver, Lower Saxony Heidelberg, Baden-Württemberg | Leipzig, Saxony Munich, Bavaria Münster, North Rhine-Westphalia Nuremberg, Bavaria Oberammergau, Bavaria Regensburg, Bavaria Schwerin, Mecklenburg-Vorpommern Stuttgart, Baden-Württemberg | Weimar, Thuringia |