Big Ben is the most recognizable landmark of London. Actually big Ben is the name of the largest bell on the clock, located in the Northern part of the Palace of Westminster in London, although the name is also often used to denote a clock or the clock tower as a whole. This part of the architectural complex of the Palace of Westminster. Official name - "the Clock tower of Westminster Palace", also called "the Tower of St. Stephen." "Big Ben" is the building itself and watch together with bell. The name of the tower is derived from the name of the 13-ton bell that is installed inside of it. Big Ben is the largest four-sided clock with bells and the third tallest clock tower in the world. In may 2009 watch celebrated its 150th anniversary (watch first started may 31) numerous events.
