452 Fifth Avenue is an office building at the southwest corner of Fifth Avenue and 40th Street in the Midtown Manhattan neighborhood of New York City. The building primarily consists of the 30-story, 400-foot (120 m) HSBC Tower, completed in late 1985 and designed by Attia & Perkins. The 10-story Knox Building, a Beaux-Arts office building designed in 1902 by John H. Duncan, is preserved at the base of the skyscraper. 452 Fifth Avenue faces Bryant Park immediately to the north.