The Colosseum is probably the most impressive building of the Roman empire. Originally known as the Flavian Amphitheater, it was the largest building of the era.
Emperor Vespasian, founder of the Flavian Dynasty, started construction of the Colosseum in AD 72. It was completed in AD 80, the year after Vespasian's death.
The elliptical building is immense, measuring 188m by 156m and reaching a height of more than 48 meter (159 ft). The Colosseum could accommodate some 55,000 spectators who could enter the building through no less than 80 entrances.
Emperors used the Colosseum to entertain the public with free games. Those games were a symbol of prestige and power and they were a way for an emperor to increase his popularity.
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