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Description: The Clock Tower is the world's largest four-faced, chiming clock. The structure is situated at the north-eastern end of the Houses of Parliament in Westminster, London. It is often colloquially referred to as Big Ben, which is actually the nickname of the main bell housed within the tower (formally known as the Great Bell) , The Clock Tower is a focus of New Year celebrations in the United Kingdom, with radio and TV stations tuning to its chimes to welcome the start of the year. Similarly, on Remembrance Day, the chimes of Big Ben are broadcast to mark the 11th hour of the 11th day of the 11th month and the start of two minutes' silence.