The Colosseum The Colosseum, also known as the Flavlan Amphitheatre Is an anclent Roman structure located in the center of Rome, Italy,This Iconic elliptical amphitheater is considered one of the greatest works of Roman engineering and architecture. Built of concrete and sand It is the largest amphitheater ever built Constructed between AD 70 ond 80, the Colosseum could hold an estimated 50,000 to 80,000 spectators hosting a variety of public spectacles such as pladlator contests, animal hunts mock sea battles, and executions.The Colosseum's design and engineering allowed for efficient crowd control with numerous entrances and exils. The exterlor of the Colosseum is a mavel with Its four storles of arches adorned with decorative Corlnthian and Doric columns. The seating there were arranged by social class, with the upper tiers reserved for the lower classes and the best seats near the orena for the elite. Despite centuries of earthquakes and stone-robbers, the Colosseum remains a symbol of ancient Rome's grandeu It is a UNESCO World Heritage Site and attracts millions of visitors each year. What material was primarily used in the construction of the Colosseum? Morble and granite