Panoramic view of the Amphitheatre of El Jem, an archeological site in the city of El Djem, Tunisia. The amphitheatre, one of the best-preserved Roman ruins and a UNESCO World Heritage Site since 1979, was built around 238 AD, when modern Tunisia belonged to the Roman province of Africa. It is the third-biggest amphitheatre in the world, with axes of 148 m (486 ft) and 122 m (400 ft) and a seating capacity of 35,000, unique in Africa.Photograph: Poco a poco