The 羅馬競技場, known as the Colosseum in English, is an ancient amphitheater located in the center of Rome, Italy. Built between 70-80 AD, it was used for various public spectacles, including gladiatorial contests, animal hunts, and mock sea battles. The structure could hold up to 80,000 spectators and is an iconic symbol of Roman engineering and architecture. The Colosseum is made of concrete and stone, showcasing the advanced construction techniques of the Roman Empire. Despite suffering damage from earthquakes and stone robbers over the centuries, it remains a popular tourist attraction and a UNESCO World Heritage Site, representing the rich history of ancient Rome.