The Colosseum


"The amphitheater seated some 50,000 spectators, who were shielded from the sun by a massive retractable velarium (awning). Supporting masts extended from corbels built into the Colosseum’s top, or attic, story, and hundreds of Roman sailors were required to manipulate the rigging that extended and retracted the velarium. The Colosseum was the scene of thousands of hand-to-hand combats between gladiators, of contests between men and animals, and of many larger combats, including mock naval engagements. However, it is uncertain whether the arena was the site of the martyrdom of early Christians." (Britannica: New 7 Wonders of the World, 14 Feb 2018)