The Fuller Building, better known as the Flatiron Building, was one of the tallest buildings in New York City upon its completion in 1902. The building, at 175 Fifth Avenue in the borough of Manhattan, sits on a triangular island block at 23rd Street, Fifth Avenue, and Broadway, anchoring the south (downtown) end of Madison Square.The Flatiron Building was designed by Chicago's Daniel Burnham in the Beaux-Arts style. Like a classical Greek column, its limestone and glazed terra-cotta façade is separated into three parts horizontally. Since it was one of the first buildings to use a steel skeleton, the building could be constructed to 285 feet (87 m), which would have been very difficult with other construction methods of that time.The initial design by Daniel Burnham shows a similar design to the one constructed, but with a far more elaborate crown with numerous setbacks near the pinnacle. A clock face can also be seen. However, this was later removed from the design.At the rounded tip, the triangular tower is only 6.5 feet (2 meters) wide. The 22-story building, with a height of 285 ft (87 meters), is often considered the oldest surviving skyscraper in Manhattan, though in fact the Park Row Building (1899) is both older and taller.