From Dortmund main station, take S-Bahn line 1 in the direction of Bochum/Essen to the Dortmund Universität stop (journey time approx. 7 minutes).
From Bochum Hauptbahnhof, take S-Bahn line 1 in the direction of Dortmund to the Dortmund Universität stop (journey time approx. 15 minutes).
You can reach the building on foot in about 15 minutes from the S-Bahn station. Walk up the wide staircase of the S-Bahn station. Turn left along the university library, cross the Mensa bridge and continue straight ahead. At Martin-Schmeißer-Platz turn left until you reach Otto-Hahn-Straße. There, keep to the right and continue along Otto-Hahn-Straße until you reach house number 12.