The city known for the Colosseum is Rome, Italy. This ancient amphitheater is one of the most iconic landmarks and a significant symbol of Roman architecture and culture. Built between AD 70 and 80, the Colosseum could hold tens of thousands of spectators who came to watch gladiatorial contests and public spectacles. Its intricate design and engineering showcase the advanced skills of Roman builders. As a UNESCO World Heritage site, the Colosseum attracts millions of tourists annually, who marvel at its grandeur and learn about its historical significance in the ancient world.