Zaghouan is an Andalusia city and is considered a Roman water temple. A spring originating here supplied ancient seaside Carthage with fresh water. Its main room above the spring was dedicated to one of the many gods of water and encloses a fountain surrounded by twelve niches. Each niche previously held a statue depicting one of the twelve months of the year. The temple used to be the starting point of the longest Roman Aqueducts which for 76 mi/123 km to Carthage.
Depart from Hotel Dar el Marsa or Hotel El Hana International Tunis and visit the aqueduct (13 mi/22 km from Tunis). Sitting at a height of 984 ft/300 m on Jebel Zaghouan, a subterranean spring burst from the rock into the aqueduct originating here. Later this section converges with another aqueduct coming from Jougar. Together they flow 76 mi/123 km to the immense cisterns of Maalga in Carthage. Proceed to Zaghouan, the site where Hamilcar (father of Hannibal) defeated the mercenaries rebelling against Carthage after the first Punic war. Carthage was defeated by the Romans in 241 B.C. and was forced to pay a heavy war tribute to Rome. Visit the Temple des Eaux. This once grand semi-round temple is built close to the city, over the springs of Zaghouan. It might have been constructed around the time when the Emperor Hadrian ordered the building of the aqueducts to Carthage. Its main room above the spring was, without doubt, dedicated to one of the many gods of water, and it encloses a fountain surrounded by twelve niches. Each niche previously held a statue depicting one of the twelve months of the year.