The city famously known for the Colosseum is Rome, the capital of Italy. The Colosseum, an iconic symbol of ancient Roman architecture, was used for gladiatorial contests and public spectacles. Built during the reign of Emperor Vespasian, it could hold tens of thousands of spectators and has become a major tourist attraction. The engineering marvel represents the political and cultural significance of ancient Rome and serves as a reminder of its history. Today, the Colosseum stands as a UNESCO World Heritage Site, attracting millions of visitors each year.