Flatiron's ornate but restrained facade is composed of stone and terra-cotta panels whose forms simulate the effects of rustication.

Bearing the influence of architectural trends introduced at the 1893 World's Columbian Exposition in Chicago, Burnham's eye-catching design combined elements of French and Italian Renaissance architecture.

The developer built the skyscraper as a speculative project with the intention of renting out offices to various commercial and financial enterprises which was unusual at this time.

The building's triangular plan was a clever response to the awkward site produced by the intersection of Broadway and 5th Avenue.

This steel-framed terra-cotta and stone-clad skyscraper represents the developers' first (and ultimately unsuccessful) attempt to create a new business center north of Wall Street.

It replaced a trapezoid-shaped building of around 8-10 stories.

The building was added to the National Register of Historic Places in 1979.

One of the city's most famous landmarks, a postcard depicting this building is a must-have in the inventory of nearly all New York City's souvenir shops.

Designated a National Historic Landmark in 1989 for possessing national significance in commemorating the history of the United States of America.

So-called because of its triangular shape, this was one of the earliest buildings to utilise a steel frame from which the exterior walls were hung, a method commonly employed around the world today.

In the early 20th century, the building's position was blamed for generating unusual wind currents which apparently raised women's skirts and attracted voyeuristic men.