lt's famous clock,lt's veny tall and old.lt's in London.What is it?

lt's famous clock,lt's veny tall and old.lt's in London.What is it?
lt's famous clock,lt's veny tall and old.lt's in London.What is it?

lt's famous clock,lt's veny tall and old.lt's in London.What is it?
Big Ben（伦敦英国议会大厦钟楼上的）大本钟

^ it?_ 猜一猜 winter