Designed by Daniel Burnham and Frederick Dinkelberg, the Flatiron Building is a triangular 22 story building located on Fifth Avenue in Manhattan, NY. After its completion in 1902, it was one of two “skyscrapers” located north of 14th Street. The Flatiron Building, previously known as the Fuller Building, got its name from its resemblance to cast-iron clothes iron. This building was constructed very quickly, the steel was pre-cut so the frame was able to be assembled at a rate of one floor a week, and total construction time was one year. The Flatiron building is an iconic skyscraper in New York City and was designated as a New York City landmark in 1966, added to the National Register of Historic Places in 1979, and was designated a National Historic Landmark in 1989. However, the building is currently empty, as of November 2020, and the interior is expected to be updated, by adding central heat and air, removing the interior walls on all floors to create open triangular floors, upgrading the elevators and sprinkler system, and add a second staircase. These renovations are expected to finish in 2022, and cost between 60 and 80 million dollars.