The Flatiron Building, a 22-story triangular skyscraper in Manhattan's Flatiron District, was designed by Daniel Burnham and Frederick P. Dinkelberg and opened in 1902. Its unique shape, resembling a clothes iron, gives it its name. Originally built as the headquarters for the Fuller Company, it has since changed ownership multiple times. The building's facade is divided into three sections, with a limestone base and glazed terracotta upper stories. Considered an iconic symbol of New York City, the Flatiron Building is a popular landmark and a favorite among locals and tourists alike.