Today in class we were given four different topics to research. The four topics were the Coliseum, Circus Maximus, the Roman Forum, and the Aqueducts. The Coliseum was officially known as the Flavian Amphitheater. It was the largest amphitheater in the Roman world. The Coliseum could seat more than 50,000 spectators. The building began in 72 AD and took 9 years to build.