This iconic clock tower is one of the most recognizable landmarks in the world, standing 96 meters tall and featuring four dials, each measuring 23 feet in diameter. The clock's four faces are made of opal glass and are illuminated at night, making it a beacon in the London skyline. The clock's hour hands are 9 feet long, while the minute hands are 14 feet long, and the clock's mechanism is wound by hand three times a week. The clock tower is also known as St Stephen's Tower and is located at the north end of the Palace of Westminster, housing the bell known as Big Ben, which weighs over 13 tons and is one of the largest bells in the world.