Witten, Nordrhein-Westfalen, Germany
Munich, Bavaria, Germany
Saint Petersburg, Russian Federation
Konstanz, Baden-Württemberg, Germany
Konstanz, Baden-Wuerttemberg, Germany
Hamburg, Hamburg, Germany
Zürich, Zürich, Switzerland
Melbourne, Victoria, Australia
Vaihingen an der Enz, Baden-Württemberg, Germany
Pretoria, Gauteng, South Africa
