Citigroup Center
The Citigroup Center (formerly Citicorp Center and also known by its address, 601 Lexington Avenue) is an office skyscraper in the Midtown Manhattan neighborhood of New York City, New York, U.S. Built in 1977 for Citibank, it is 915 feet (279 m) tall and has 1.3 million square feet (120,000 m2) of office space across 59 floors. The building was designed by architect Hugh Stubbins, associate architect Emery Roth & Sons, and structural engineer William LeMessurier.