The Roman Theatre of Orange has been listed by UNESCO as a world heritage site since 1981. Since 2007, the classification includes the Saint Eutrope Hill. From the top of this hill you have a bird's eye view of the theatre's interior. Good to know if you can't afford the price of a seat, quite expensive, for one of the performances!
Abandoned in the Middle Ages - since the Church thought that plays were too immoral - the theatre served as a defence structure and as a refuge for the population during the many wars over the centuries, even becoming encumbered with houses.