Who was the main designer of the New York City pink skyscraper with the Chippendale-style cabinet top?

550 Madison Avenue (formerly known as the Sony Tower or Sony Plaza and before that the AT&T Building), is an iconic postmodern 647-foot-tall (197-meter), 37-story highrise skyscraper located in Manhattan. Designed by Philip Johnson, it was formerly the headquarters of Sony Corporation of America. The tower was purchased by the Olayan Group and Chelsfield for $1.4 billion in 2016.

The building was designed by architect Philip Johnson and partner John Burgee and was completed in 1984. It is close (in concept) to the 1982 Humana Building by Michael Graves. It became immediately controversial for its ornamental top (sometimes mocked as "Chippendale", after the open pediments characteristic of the famous English designer's bookcases and other cabinetry), but enjoyed for its spectacular arched entrance way, measuring about seven stories in height. With these ornamental additions, the building challenged architectural modernism's demand for stark functionalism and purely efficient design. The effect the building had on the public at large has been described as legitimizing the postmodern architecture movement on the world stage. In July 2018 it was designated a New York City landmark by the Landmarks Preservation Commission.