The most famous clock tower located in London is the Big Ben. Although "Big Ben" technically refers to the Great Bell within the tower, the name is commonly used to refer to the entire structure, officially named the Elizabeth Tower. Located at the northern end of the Palace of Westminster, it has become a symbol of London and the United Kingdom. Completed in 1859, Big Ben is renowned for its impressive clock mechanism and its notable chimes, which resonate throughout the city. The tower's Gothic Revival architecture adds to its grandeur, making it a must-see attraction for visitors.