Answer:
If you are asking about the big clock in London, its proper name isn't 'Big Ben'. The 14 ton bell inside the clock tower has been nicknamed Big Ben, but again that isn't its proper name. Its real name is the Great Bell but it was called Big Ben after Sir Benjamin Hall who was Commissioner of Works when the bell was installed in 1859. Gradually, people started referring to the clock as Big Ben The clock itself is the largest four sided clock in the world and is on the Clock Tower of the Palace of Westminster, which is the official name for the Houses of Parliament.