Sears conglomerate during the mid-20th century, adding Dean Witter and Coldwell Banker real estate in 1981, starting Prodigy as a joint venture with IBM in 1984, and introducing the Discover credit card in 1985. In 1974, Sears completed the 110-story Sears Tower in Chicago, which became the world's tallest building, a title it took from the former World Trade Center towers in New York. Sears moved to the new Prairie Stone Business Park in Hoffman Estates, Illinois, between 1993 and 1995. The Sears Centre is a 10,001-seat multi-purpose arena located in Hoffman Estates adjacent to the Prairie Stone campus. Even though
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