860–880 Lake Shore Drive is a twin pair of glass-and-steel apartment towers on N. Lake Shore Drive along Lake Michigan in the Streeterville neighborhood of Chicago, Illinois. They were designated as Chicago Landmarks on June 10, 1996. They were added to the National Register of Historic Places on August 28, 1980. The 26 floor, 254 ft (82 m) tall towers were designed by the famous architect Ludwig Mies van der Rohe, and dubbed the "Glass House" apartments. Construction was by the renowned Chicago real estate developer Herbert Greenwald, and the Sumner S. Sollitt Company. The design principles first expressed in 860-880 Lake Shore Drive were copied extensively, and are now considered characteristic of the modern International Style.