Berlin, Berlin, Germany
Lisbon, Lisbon, Portugal
düsseldorf, nordrhein, Germany
Ulaanbaatar, Ulaanbaatar, Mongolia
Landau, Rhineland-Palatinate, Germany
Oberhausen, North Rhine-Westphalia, Germany
Duisburg, North Rhine-Westphalia, Germany
Gelsenkirchen, Nordrhein-Westfalen, Germany
Muelheim an der Ruhr, North Rhine-Westphalia, Germany
Stuttgart, Baden-Würrtemberg, Germany
Essen, North Rhine-Westphalia, Germany
Uppsala, Uppsala, Sweden