Dortmund, North Rhine-Westphalia, Germany
Duisburg, Nordrhein-Westfalen, Germany
Bochum, Nordrhein-Westfalen, Germany
Witten, North Rhine-Westphalia, Germany
Mönchengladbach, North Rhine-Westphalia, Germany
Cologne, North Rhine-Westphalia, Germany
Oberhausen, North Rhine-Westphalia, Germany
Hamm, North Rhine-Westphalia, Germany
Bochum, North Rhine-Westphalia, Germany
Wuerzburg, Bavaria, Germany
Oelde, North Rhine-Westphalia, Germany
Vaihingen an der Enz, Baden-Württemberg, Germany