A large outdoor stadium located in the heart of Rome. Was built in the reign of Emperor Xian of the Western Roman Empire. And built in the first century AD, about 80 years spent approximately 10 years, stands in a circle of brick and sandstone temple about 527 meters by around 57 meters high, can hold around 50,000 spectators. People are cleverly designed to build a stadium-shaped oval. To make the audience feel closer to the athletes. The design of the drainage system to prevent flooding in the rain. Holds a prototype of the modern sports stadiums.
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