London's Big Ben Clock Tower
If you visit London and decided to spend a day touring the whole city, you really can't miss London's Big Ben. You will see it wherever you go and its dare glaring telling you that you are at the heart of the city. It's visible from the famous London Bridge and even if you are riding a tourist bus you will probably notice it at every stop that you will make. It is regarded as the most precise tower clock in the world.
For most it's more than a landmark. London's Big Ben is full of colorful history and meaningful symbolism. The Great Clock of Westminster is it's otherwise known, Big Ben refers to the bell rather than the clock or the entire building.