590 Madison Avenue, also known as the IBM Building, is a skyscraper at 57th Street and Madison Avenue in the Midtown Manhattan neighborhood of New York City. Designed by Edward Larrabee Barnes and Associates the 41-story, 603-foot (184 m)-tall tower was developed for the technology company IBM and built from 1978 to 1983.
The building is shaped like an irregular pentagon, with a chamfer cutting diagonally across what would typically be the southwest corner of a rectangular slab. The facade is made of gray-green glass and polished granite, which Barnes intended would give the building the appearance of a prism. The northeast corner of the tower is cantilevered over the main entrance, and there are no setbacks throughout the building's height. Adjacent to 590 Madison Avenue's southwest corner is a privately owned public space covered by a glass structure, which contains chairs, tables, and bamboo trees.
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