The famous Colosseum is located in Rome, Italy. This ancient amphitheater, also known as the Flavian Amphitheatre, was commissioned by Emperor Vespasian in 70-80 AD and could hold around 50,000 spectators. It was used for various public spectacles, including gladiatorial contests, animal hunts, and mock sea battles. The Colosseum remains a significant symbol of ancient Rome's architectural prowess and cultural history, attracting millions of visitors each year who come to admire its grandeur and the stories it holds.