The most famous (and largest) tower clock in the world: the Big Ben Westminster clock in London. In point of fact, Big Ben is actually the nickname for the bell that rings inside the tower. The clock itself is actually the Great Clock of Westminster.
Many of you have seen this in person, but we would be remiss if we didn’t include it. For residents of the UK, it is possible to request, through the office of your MP, a tour inside the clock tower. Oh, how we’d love to see the clock movement up close! I am an English citizen, but I live in America, so am not eligible. Ugh!