The construction of the Colosseum, also known as the Flavian Amphitheater, began around 71 AD under the Emperor Vespasian. This monument was founded in a valley between the hills of Palatine, Esquilino and Celio. In 80, nine years later, Emperor Tito inaugurated the Colosseum. This building became the largest Roman amphitheater built in the shape of an oval ring. Made of brick and travertine, it was later divided into five levels and could hold over 50,000 people! At the time, the closer a person was to the fighting arena, the higher his or her social rank. Despite the Second World War, the Colosseum has become a cultural asset of Rome and the world surviving wars and time. Even though it is now in ruins, the Colosseum continues to amaze tourists from around the world with its beauty and splendor. In 2007, it is considered one of the Seven Wonders of the Modern World! It has become the symbol of the Italian capital in the world and is a historical and archaeological jewel that bears witness to the greatness and wealth of the Roman Empire. Finally, it is the first most visited monument in Italy with about 6 million visitors annually.