This is the new Bloomberg Tower on Lexington Avenue and 59th Street. It was completed in 2005, and stands at 806 feet (246 meters) high and 54 stories tall. The first 9 floors are offices while the rest (tower) are condominiums. It currently houses, among other offices, restaurants and retail stores, the headquarters for Bloomberg LP. Michael Bloomberg is the current mayor of New York City.
The complex was designed by Cesar Pelli & Associates and was voted as one of the best skyscrapers of NYC in 2005.