The IG Farben Building or the Poelzig Building was built from 1928 to 1930 as the corporate headquarters of the IG Farben conglomerate in Frankfurt am Main, Germany. It is also known as the Poelzig Ensemble or Poelzig Complex, and previously as the IG Farben Complex, and the General Creighton W. Abrams Building. The building's original design was the subject of a competition which was eventually won by the architect Hans Poelzig.