Les Ferreres Aqueduct

The Ferreres Aqueduct (Aqüeducte de les Ferreres ), also known as the Pont del Diable ("Devil's Bridge"), is an ancient bridge, part of one of the Roman aqueducts that supplied water to the ancient city of Tarraco, today Tarragona in Catalonia, Spain. The bridge is located 4 km north of the city and is part of the Archaeological Ensemble of Tarraco (listed as a UNESCO's World Heritage Site since 2000).

Description
The Tarraco aqueduct took water from the Francolí river, 15 km north of Tarragona. It probably dates from the time of the emperor Augustus.

Les Ferreres Aqueduct is composed of two levels of arches: the upper section has 25 arches, and the lower one has 11. All arches have the same diameter of 20 Roman feet (5.9m) with a variation of 15 cm. The distance between centres of the pillars is 26 Roman feet (7.95m). It has a maximum height of 27 m and a length of 249 m, including the ends where the specus (water channel) runs atop a wall.