Capsa
Tunisia
Capsa was a Roman colonia located in the south of modern-day Tunisia. Before Roman times Capsa was a center of the Capsian culture. The Roman colonia was very important under the Roman emperors and reached 100,000 inhabitants at the end of the second century. Under the Byzantines the city was for some years the capital of the Byzantine province "Byzacena" and enjoyed a period of economic revival. General Solomon build in 540 AD a new city wall and named the city "Capsa-Justiniana". After Roman centuries it was a center of the last Christian and romance speaking people in North Africa. The corresponding modern city is Gafsa.
Archaeological site data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).