It's a Roman aqueduct, which supplied the city of Carthage with water, measured 132 km! The Zaghouan-Carthage hydraulic complex is the largest of its kind ever built. Built at the beginning of the 2nd century AD, the Zaghouan aqueduct testifies to the Romans' mastery of water supply techniques. It crosses a rugged landscape. Sometimes flush with the ground, sometimes underground, the pipeline is, on two portions, raised by arcades sometimes reaching more than 20 meters in height. Its flow has been estimated at around thirty million liters per day. Most of the water was stored in the gigantic vaulted reservoirs visible at Maalga, at the entrance to Carthage, before supplying the Baths of Antonine.

The ancient city of Thuburbo Majus was founded on the side of a hill, surrounded by a splendid fertile valley landscape, long before North Africa became part of the Roman Empire. However, it is its magnificent remains from the Roman era that make it one of the most beautiful archaeological sites in Tunisia. Its Capitol - the most important temple in Roman cities - is one of the best preserved in Tunisia. Six elegant Corinthian columns formed the facade. Four are still intact and overlook a wide staircase overlooking the Forum. One of the original features of Thuburbo Majus was that it had two bathing establishments: one for winter and the other for summer. The summer thermal baths were completed by a sports field, surrounded by a beautiful covered gallery, called Palestre des Petronii after the Roman family who had built the monument. Another peculiarity of the site is that it has preserved vestiges reminiscent of its pre-Roman past as “temple of Caelestis” or the “temple of Baalat”.