Big ben:

Big Ben , officially known as the Elizabeth Tower, is an iconic symbol of London and the United Kingdom. It was completed in 1859 following a design competition after the previous tower was destroyed by fire. Big Ben, London tower clock famous for its accuracy and for its massive bell. Strictly speaking, the name refers to only the great hour bell, but it is commonly associated with the whole clock tower at the northern end of the Houses of Parliament. Big Ben , the most famous clock tower in the world, is a must-see. Here's everything you need to know about it before you visit London. This guided tour of the Elizabeth Tower takes you up a narrow 334-step spiral stairwell to the belfry where Big Ben , the Great Bell, hangs. Along the route, your guide will reveal details of the most extensive and complex conservation project in the Tower’s history. This vital conservation work ...