Back when the Jordanian city of Jerash was known to the Romans as Gerasa, the large South Theater was sometimes used for naumachia.
Naumachia is similar to gladiator combat, just that you need to fill the theater with water and add life-size reproductions of warships. The stage was dry by the time we got there, though staring at it you can't help but imagine these ancient naval battles.
See more slides from My Grand-Père's World.