1. Colosseum
The Colosseum, originally known as the Flavian Amphitheatre, is the largest Roman amphitheater in the world, capable of holding an estimated 50,000 to 87,000 spectators. Located in the heart of Rome, it is the most important Roman amphitheater and the most imposing monument of ancient Rome that has survived to this day. Inscribed in 1980 on the UNESCO World Heritage List, and in 2007, the only European monument, it was also included among the New Seven Wonders of the World. Built during the Flavian era on the eastern edge of the Roman Forum, construction began under Vespasian in 70 AD and was completed by Titus in 80 AD. The amphitheater was used for gladiator shows and other public events such as hunting spectacles, naval battles, famous battle reenactments, and dramas based on classical mythology.