Travelling on the A3 take the exit "Düsseldorf-Mettmann" and turn into Bergische Landstraße, direction Düsseldorf-Grafenberg. Follow the street for 7 km. Then turn to the right into Rennbahnstraße (there are signs reading: Rennbahn and Wildpark). Follow Rennbahnstraße, which becomes Mörsenbroicher Weg.
 
House number 200 is the first office building on the right behind the forest. There is a car park right next to the building. You will find us on the seventh floor. 
 
Map (click on the map to enlarge):