

On, celebrations were held to mark the tower's 150th anniversary. All four nations of the UK are represented on the tower on shields featuring a rose for England, thistle for Scotland, shamrock for Ireland, and leek for Wales. Dials of the clock are 22.5 feet (6.9 m) in diameter. Its base is square, measuring 40 feet (12 m) on each side. The tower stands 316 feet (96 m) tall, and the climb from ground level to the belfry is 334 steps. When completed in 1859, its clock was the largest and most accurate four-faced striking and chiming clock in the world. The tower was designed by Augustus Pugin in a neo-Gothic style.

The official name of the tower in which Big Ben is located was originally the Clock Tower, but it was renamed Elizabeth Tower in 2012 to mark the Diamond Jubilee of Elizabeth II. 51☃0′03″N 0☀7′28″W / 51.5007°N 0.1245°W / 51.5007 -0.1245īig Ben is the nickname for the Great Bell of the Great Clock of Westminster, at the north end of the Palace of Westminster in London, England, and the name is frequently extended to refer also to the clock and the clock tower.
