The most famous clock tower in the world is Big Ben, located at the north end of the Palace of Westminster in London, England. Officially named the Great Bell of the clock, "Big Ben" is often mistakenly referred to as the clock tower itself. The tower was completed in 1859 and has become an iconic symbol of London and British culture. Big Ben is renowned for its accuracy and its chimes, which resonate throughout the city. It attracts millions of tourists annually, making it one of the most recognizable landmarks in the world.