Willis Tower new competition by retailing giants such as Kmart, Kohl's, and Walmart. The fortunes of Sears & Roebuck declined in the 1970s as the company lost market share; its management grew more cautious. Nor did the Sears Tower draw as many tenants as Sears had hoped. The tower stood half-vacant for a decade as a surplus of office space was erected in Chicago in the 1980s. In 1990, the law firm of Keck, Mahin & Cate decided to move out of its space in the Sears Tower and into a development that would become 77 West Wacker Drive, rebuffing Sears' attempts
Chicago Water Tower Louisville Water Tower in Louisville, Kentucky. The Chicago Water Tower now serves as a Chicago Office of Tourism art gallery known as the City Gallery in the Historic Water Tower. It features the work of local photographers and artists, and filmmakers. The tower, built in 1869 by architect William W. Boyington from yellowing Lemont limestone, is 182 feet (55 m) tall. Inside was a 138-foot (42 m) high standpipe to hold water. In addition to being used for firefighting, the pressure in the pipe could be regulated to control water surges in the area. Together with the adjacent Chicago Avenue