Carson Pirie Scott & Company’s former flagship store, designed by Louis H. Sullivan (1856-1924) was also built in stages, beginning in 1899, 1903, augmented by an addition by D. H. Burnham & Co. in 1906, and ending with a 1961 addition by Holabird and Root. Although Carson’s wide windows and narrow piers are expressive of the internal steel frame, the building is more famous for its exquisite ornament by Sullivan. The embellished storefronts, newly restored decorative cornice, and ornate columns capitals on the interior all bear Sullivan’s personal style of ornament. It was both named a Chicago Landmark and listed in the National Register in 1970. It was named a National Historic Landmark in 1975.