The New York Stock Exchange Building (also NYSE Building) is the headquarters of the New York Stock Exchange (NYSE), located in the Financial District of Lower Manhattan in New York City. It is composed of two connected structures occupying much of the city block bounded by Wall Street, Broad Street, New Street, and Exchange Place. The central section of the block contains the original structure at 18 Broad Street, designed in the Classical Revival style by George B. Post. The northern section contains a 23-story office annex at 11 Wall Street, designed by Trowbridge & Livingston in a similar style.
The marble facade of 18 Broad Street contains colonnades facing east toward Broad Street and west toward New Street, both atop two-story podiums. The Broad Street colonnade, an icon of the NYSE, contains a pediment designed by John Quincy Adams Ward and Paul Wayland Bartlett, depicting commerce and industry. The facade of 11 Wall Street is simpler in design but contains architectural details similar to those at 18 Broad Street. Behind the colonnades at 18 Broad Street is the main trading floor, a 72-foot-tall (22 m) rectangular space. An additional trading floor, nicknamed the Garage, is at 11 Wall Street. There are offices and meeting rooms in the upper stories of 18 Broad Street and 11 Wall Street.
