By train:
Change at Köln Hauptbahnhof (Main Station) to a local train that takes you to Köln-Süd (Cologne South). Trains usually departure from platform 8 or 9. After arriving at Köln-Süd (second stop from Main Station) walk in the direction of the train, leave the station, and enter Otto-Fischer-Str. to the right. When crossing the Luxemburger Wall you will see the park. In the park turn right and walk to Zülpicher Straße. At Zülpicher Straße turn right and follow the street. You will find the institute at the right hand side.
By tram:
As an alternative you can take the tram 18 from Main Station and get out at "Eifelwall". From there you can walk through the park to Zülpicher Straße. Turn right and follow the street. You will find the institute at the right hand side.
Enter the building from the main entrance and take the stairs or the elevator to the second floor.
Follow the corridor in front of the elevator and you will find my office at the right hand side (R261).