This monumental construction was built at the end of the 1920s by Hans Pölzig. At the time, it housed the headquarters of the chemical concern IG Farben, who later disgraced themselves working for the Nazis. The 240-metre-long building is designed in the neo-classical style that became so popular in the Nazi era. The IG-Farbenhaus was taken over by the US Army in 1945 and used as headquarters for Commander in Chief Eisenhower. After the American military left, the complex stood empty for several years before being handed over to Frankfurt University.