Rising abruptly and unmistakably from the Midtown Manhattan skyline, the slanted roof of Citigroup Center, formally known as 601 Lexington Avenue, has been an iconic part of the New York City skyline for decades. A great feat of engineering and modern architecture, Citigroup Center is unquestionably one of the city’s most unique and recognized skyscrapers. … Continue reading The Hidden History of Citigroup Center