The elliptically shaped amphitheater is a better-preserved twin of the one at Arles and is far more complete than the Colosseum of Rome. It's two stories high, each floor having 60 arches, and was built of stones fitted together without mortar. One of the best-preserved arenas from ancient times, it once held around 24,000 spectators who came to see gladiatorial combats and wolf or boar hunts. Today it's used for everything from concerts to bullfights.