http://www.touropia.com/roman-amphitheaters/ - &quot;The world’s third-largest amphitheater to survive from Roman antiquity. [...] The Arena in Verona was built in 30 AD and could host 30,000 spectators. The Roman amphitheater has been used continuously throughout the centuries to host shows and games: gladiator fights during Roman times, jousts and tournaments in the Middle Ages and from the 18th century until the present day the arena is the setting for Verona’s spectacular opera performances.&quot;