Just outside the city of Tarragona we find one of the most spectacular constructions of Roman origin: El Puente del Diablo (The Devil’s Bridge), an aqueduct built in the 1st century BC. More than 200 meters long, two stories high, once used to supply the city’s water, but which you can walk on today. The aqueduct is located in a large forest where you can also enjoy a nice walk See link to below short (8 km), easy but beautiful walking route on Wikiloc.