Aon Center (Chicago) the world headquarters of Aon and Amoco. Aon's US operations are still headquartered here. The building is also the co-headquarters of Kraft Heinz. The Standard Oil Building was constructed as the new headquarters of the Standard Oil Company of Indiana, which had previously been housed at South Michigan Avenue and East 9th Street. When it was completed in 1973, it was the tallest building in Chicago and the fourth-tallest in the world, earning it the nickname "Big Stan". (A year later, the Sears Tower took the title as Chicago's and world's tallest.) The building employs a tubular steel-framed structural system
Sears, Roebuck & Company Mail Order Building (Los Angeles, California) Deco tower and "Sears" sign became a "beacon for Eastsiders returning home on area freeways," and has been described by the Los Angeles Conservancy as "one of the dominant visual icons of the Eastside" of Los Angeles. The distribution center was closed in January 1992, eliminating jobs for 585 full-time workers and 775 part-timers. The facility's general manager said at the time that the Boyle Heights center was the most expensive that Sears operated, partly because the facilities were "outdated." In 2004, developer MJW Investments announced it had acquired the building and would make it the centerpiece of a proposed