 During World War II, the surrounding neighbourhood was devastated, but the building itself was left largely intact (and inhabited by the homeless citizens of a bomb-ravaged Frankfurt). In March 1945, Allied troops occupied the area and the IG Farben Building became the American headquarters of General Dwight D. Eisenhower. Eisenhower's office was where he received many important guests; including General de Gaulle, Field Marshal Montgomery and Marshal Zhukov. It was there that he signed the "Proclamation No. 2", which determined which parts of the country would be within the American zone. Eisenhower vacated the building in December 1945 but his office was still used for special occasions: the constitution of the state of Hesse was signed there, the West German Ministerpräsident received his commission to compile the Grundgesetz (German constitution) and the administration of the Wirtschaftsrat der Bizone (Economic Council of the Bizone) was also located there.
