The iconic landmark called the Colosseum is located in Rome, Italy. This ancient amphitheater is one of the most significant architectural and engineering feats of the Roman Empire, constructed around A.D. 70-80. It was used for various public spectacles, including gladiatorial contests and mock sea battles. The Colosseum can hold tens of thousands of spectators, showcasing the grandeur of Roman entertainment. Today, it stands as a UNESCO World Heritage site and a major tourist attraction, symbolizing the enduring legacy of Roman civilization.