Overview: Out of the carnage of Emperor Nero's death and the civil war that followed, a new imperial dynasty was born, one that looked to win over the hearts of the people by building the largest arena the world had ever seen: Rome's Colosseum. Examine the day in 80 A.D. when the Flavian Amphitheatre opened with a 100-day exhibition of animal and human slaughter. Visit the site, explore ancient artifacts, and see how the Colosseum remains a testament to Rome's reach and ambition and its thirst for blood and glory.