Empire State Building In a separate transaction, the land underneath the building was sold to Prudential Insurance for $29 million. Helmsley, Wein, and Malkin quickly started a program of minor improvement projects, including the first-ever full-building facade refurbishment and window-washing in 1962, the installation of new flood lights on the 72nd floor in 1964, and replacement of the manually operated elevators with automatic units in 1966. The little-used western end of the second floor was used as a storage space until 1964, at which point it received escalators to the first floor as part of its conversion into a highly-sought retail area. In
Empire State Building the New York City Landmarks Preservation Commission, and confirmed by the New York City Board of Estimate. It was designated as a National Historic Landmark in 1986. In 2007, it was ranked number one on the AIA's List of America's Favorite Architecture. The Empire State Building's art deco design is typical of pre–World War II architecture in New York. The modernistic, stainless steel canopies of the entrances on 33rd and 34th Streets lead to two-story-high corridors around the elevator core, crossed by stainless steel and glass-enclosed bridges at the second-floor level. The riveted steel frame of the building was originally