Located at the foot of the Téboursouk Mountains in the Tunisian ridge, the city is built half-way up a hill at 400 m (1,300 ft) above sea level.The ruins of ancient Thubursicum Bure are a large Byzantine enclosure of pentagonal form, erected under the reign of Justin II (565-578), and whose northern front encompasses a Roman gate and cemetery.The city obtained the statute of municipality in 1904 under the French protectorate and the status of chief town of delegation at the independence of Tunisia.During Roman and Byzantine times the city was the seat of a Catholic diocese, the suffragan of Archdiocese of Carthage.Servus Dei is mentioned by Augustine of Hippo in his Contra Cresconium[5] around 404 and he had as a competitor the Donatist Bishop, Cyprian, who, according to the testimony of Augustine, was deposed by Primianus (the Donatist Bishop of Carthage) because[6] Cyprian was caught in a brothel.