From the large Theodor-Heuss-Straße turn into the Friedrich-Naumann-Straße. Take the next possible entrance on the left after the LIDL to park in our customer parking lot.
After parking, go to the opposite side of the street. Follow the pedestrian path for 15 metres to the left. You will come to an underground car park entrance. Keep right and follow the small lane to the back entrance of the building.