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
Glenbard West High School style of a castle, complete with roof turrets. Glenbard, as it was originally named, was constructed in 1922 atop Honeysuckle Hill, overlooking Lake Ellyn. Built with dark red brick, the building was built with castle-like design, complete with a turret and other minor castle details. Glenbard West also has a tower known as the sixth floor. From the window of the sixth floor tower, the Willis (formerly Sears) Tower in downtown Chicago can be seen on a clear day. Athletics were initially played in a gymnasium, built in 1936, in the school building itself, but with the construction of a