Willis Tower to entice the firm to stay. Two years later, Sears began moving its own offices out of the Sears Tower. In 1994, Sears sold the building to Boston-based AEW Capital Management, with financing from MetLife. At the time, it was one-third vacant. By 1995, Sears had completely left the building, moving to a new office campus in Hoffman Estates, Illinois. In 1997, Toronto-based TrizecHahn Corporation (the owner of the CN Tower at the time) purchased the building for $110 million, and assumption of $4 million in liabilities, and a $734 million mortgage. In 2003, Trizec surrendered the building to lender
Tower Petroleum Building Tower Petroleum Building The Tower Petroleum Building (also known as The Tower Building) is a historic Art Deco Skyscraper located at 1907 Elm Street in the City Center District of Downtown Dallas. The tower, a contributing property in the Dallas Downtown Historic District and the Harwood Street Historic District, features Zig-zag Moderne styling and was designed by architect Mark Lemmon. The Tower Petroleum Building features Zig-zag Moderne motifs, one of the few buildings left in Downtown Dallas which features such designs. The building's facade is clad in limestone and has green spandrels panels between the windows. The upper floors of