There are 27 buildings in Boston that stand at least 400 feet (122 m) in height. Boston (skyline pictured), the capital of the U.S. state of Massachusetts and the largest city in New England, is home to 251 completed high-rises overall; the majority of the city's skyscrapers are clustered in the Financial District and Back Bay neighborhoods. The tallest structure in Boston is the 60-story Hancock Place, more commonly known as the John Hancock Tower, which rises 790 feet (241 m) in the Back Bay district. Hancock Place 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 749 feet (228 m). 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. Overall, with 46 skyscrapers rising at least 330 feet (100 m) in height, Boston's skyline is ranked 11th in the United States and 40th in the world. (Full list...)