The Dome of Bent El-Ray is an underground structure from the Roman era, formerly known as "Bain de Didon1", located in the city of Carthage in Tunisia and was restored between 1978 and 1989 during the international campaign run by UNESCO. The building dates back to the years 320-340 AD and consists of a large room seven meters long and two adjacent rooms three meters high. A very beautiful and interesting place, especially for lovers of history and archeology.