The Flatiron Building (or Fuller Building, as it was originally called) is located at 175 Fifth Avenue in the borough of Manhattan, New York City and is considered to be a groundbreaking skyscraper. Upon completion in 1902, it was one of the tallest buildings in the city and the only skyscraper north of 14th Street. The building sits on a triangular island-block formed by Fifth Avenue, Broadway and East 22nd Street, with 23rd Street grazing the triangle's northern (uptown) peak.