New York City Citigroup Center
The Citigroup Center is one of the largest skyscrapers in New York City, United States, located at 601 Lexington Avenue between 53rd Street and 54th Street in midtown Manhattan. The 59-floor, 915-foot (279 m) building is one of the most distinctive and imposing in New York's famous skyline, with a 45° angled top and a genuinely unique stilt-style base. It contains 1.3 million square feet (120,000 m²) of office space, and the 45-degree angle at the top of the building was originally intended to contain solar panels to provide energy (this idea was eventually dropped, however). It was designed by architect Hugh Stubbins Jr. for Citibank, and was completed in 1977.