Willis Tower
However, in 1997, the Canadian company TrizecHahn bought AEW's holdings of the building for $110 million. After the September 11 attacks, two of the largest office partners, Goldman Sachs and Merrill Lynch, quickly announced plans leave the building's 300,000 ft2 space. In 2003, Trizec sold its holdings of the tower to MetLife for $9 million.