Big Ben Clock Tower

Big Ben is the nickname for great bell of the clock at the north end of the Palace of Westminster in London, United Kingdom, and often extended to refer to the clock and the clock tower. The clock inside the tower was the world's largest when it was installed in the middle of the nineteenth century. The name Big Ben actually refers to the clock's hour bell, the largest of the clock's five bells. The other four are used as quarter bells. The 150 year old Big Ben Clock Tower is one of London's top attractions. The clock has become a symbol of United Kingdom and London and has appeared in many films.