Byrsa
Byrsa was a walled citadel above the Phoenician harbour in ancient Carthage, Tunisia, as well as the name of the hill it rested on.
Legend
In Virgil's account of Dido's founding of Carthage, when Dido and her party were encamped at Byrsa, the local Berber chieftain offered them as much land as could be covered with a single oxhide. Therefore, Dido cut an oxhide into tiny strips and set them on the ground end to end until she had completely encircled the hilltop of Byrsa.History
The citadel dominated the city below and formed the principal military installation of Carthage. Its name appeared on Carthaginian currency under the form .It was besieged by Scipio Aemilianus Africanus in the Third Punic War when the city was defeated and destroyed in 146BCE. The Byrsa citadel was the seat of the proconsul of Africa within the Roman Empire. In 439 CE, Geiseric took possession of Carthage. The Vandal–Alan kings ruled North Africa from the Byrsa until the Byzantine emperor Justinian reconquered the province in 533. Referring to the supposed origin of the Vandals and Alans in the Caucasus and their ongoing naval raids against the Byzantine empire, the contemporary poet Sidonius Apollinaris bemoaned that "the natural order hath been reversed, and now parched Byrsa launches against me the frenzy of the Caucasus."
StLouis Cathedral was built on Byrsa Hill starting in 1884, atop an ancient temple. Today, it serves as a cultural centre. Byrsa Hill itself is part of the archaeological site of Carthage. In addition to a cathedral monument, the Carthage National Museum was erected atop it.