55th Street is a two-mile-long, one-way street traveling east to west across Midtown Manhattan.

550 Madison Avenue is a postmodern skyscraper on Madison Avenue between 55th and 56th Streets in the Midtown Manhattan neighborhood of New York City. Designed by Philip Johnson and John Burgee with associate architect Simmons Architects, the building is a 647-foot-tall (197-meter), 37-story office tower with a facade made of pink granite. It was completed in 1984 as the headquarters of AT&T Corp. and later became the American headquarters of Sony. A four-story granite annex to the west was demolished and replaced with a shorter annex in the early 2020s.