Duisburg, North Rhine-Westphalia, Germany
Stockholm, Stockholm County, Sweden
Aachen, North Rhine-Westphalia, Germany
Mannheim, Baden-Württemberg, Germany
Megeve, Rhone-Alpes, France
Frankfurt, Hesse, Germany
Mexico City, Mexico City, Mexico
Aachen, Nordrhein-Westfalen, Germany
Cologne, North Rhine-Westphalia, Germany