Leiden, Zuid-Holland, Netherlands
Arusha, Arusha, Tanzania
Duesseldorf, North Rhine-Westphalia, Germany
Amsterdam, Noord-Holland, Netherlands
Klosterneuburg, Lower Austria, Austria
Stuttgart, Baden-Württemberg, Germany
Oxford, Oxfordshire, England
Basel, Basel-Town, Switzerland
Berlin, Germany
Brussels, Belgium
Lindau (Bodensee), Bayern, Germany