The famous clock in London known as Big Ben refers to the Great Bell located within the Elizabeth Tower at the Palace of Westminster. Many people mistakenly use the name "Big Ben" to refer to the clock itself, but it specifically denotes the bell, which was completed in 1858. The tower was renamed the Elizabeth Tower in 2012 to mark the Queen's Diamond Jubilee. Big Ben is one of London's most recognizable landmarks, renowned for its clock's accuracy and its iconic chimes, which resonate across the city, marking the passage of time.