Boston, the capital of the U.S. state of Massachusetts and the largest city in New England, is home to 251 completed high-rises, 27 of which stand taller than . The majority of the city's skyscrapers and high-rises are clustered in the Financial District and Back Bay neighborhoods. The tallest structure in Boston is the 60-story200 Clarendon, better known to locals as the John Hancock Tower, which rises in the Back Bay district. It is also the tallest building in New England and the 50th-tallest building in the United States. The second-tallest building in Boston is the Prudential Tower, which rises 52 floors and . At the time of the Prudential Tower's completion in 1964, it stood as the tallest building in North America outside of New York City.