What materials were used in the construction of the Flatiron Building?

Detailed answer

The Flatiron Building was constructed using a combination of steel, limestone, and terra cotta materials. The building's frame is made of steel, which was a innovative material at the time, and its exterior facade is clad in limestone and terra cotta. The use of these materials allowed for the creation of a strong, durable, and fire-resistant building, and it helped to establish the Flatiron Building as a pioneering example of modern skyscraper design. The building's exterior facade is also notable for its intricate detailing and ornate decoration, which were achieved through the use of carved limestone and glazed terra cotta.