The pyramidal roof comprises the 39th and higher floors, and is set off by a cornice at the 39th-story level. Dormer windows protrude from the roof on the 39th through 43rd floors; these dormers contain semi-circular hoods, except for the 39th-floor dormers, which do not contain any hoods. The higher floors of the roof have fewer windows on each side. The 44th floor is illuminated by two small windows on each side, located between ribs that rise to support a square viewing platform on the 45th floor. The 46th and 47th floors comprise a two-story-tall peristyle, supported by eight columns. The 48th floor contains a gold-colored aluminum cupola with eight windows. The topmost level is the 49th floor, which consists only of a platform with a gold-colored aluminium railing. The 41st through 45th floors are accessible only by a staircase. The viewing platform was originally publicly usable, receiving 120,000 visitors from around the world between 1909 and 1914.