Sears, Roebuck and Company Complex Sears, Roebuck and Company Complex The Sears, Roebuck and Company Complex on the west side of Chicago, Illinois is where Sears, Roebuck conducted the bulk of its mail order operations between 1906 and 1993. It also served as the corporate headquarters until 1973, when the Sears Tower was completed. Of its original complex, only three buildings now survive, and have been adaptively rehabilitated to other uses. The complex was designated a National Historic Landmark in 1978, at which time it still included the 3-million square foot mail order plant, the world's largest commercial building when it was completed. That building
Elgin Tower Building 1999 to showcase its architectural merit. Stickling died later that year, but his benefactors transferred the building to the William R. Stickling Charitable Foundation, who currently maintain the building. An addition was built in 1999 to house, rent-free, the Downtown Neighborhood Association, who intend to revitalize the downtown area. The tower was added to the National Register of Historic Places on May 22, 2002. The Elgin Tower Building is located at 100 E. Chicago St. in Elgin, between Douglas and N. Grove Avenues. This area has historically been known as Fountain Square, generally accepted as the downtown area of Elgin.