Aqueduct, Ferreres Aqueduct, Pont del Diable, Hispania Citerior Tarraconensis in modern-day Spain
Water does not climb hills. Rome made it cross valleys. In the 1st century BC, during the reign of Emperor Augustus, the Les Ferreres Aqueduct, also known as Pont del Diable, was constructed to transport water from the Francolí River to Tarraco, the capital of Hispania Citerior Tarraconensis in modern-day Spain.
The structure rises on stacked stone arches, carefully aligned to maintain a continuous and subtle downward gradient. No pumps were used. The flow depended entirely on gravity and accurate surveying. Even slight miscalculations would have disrupted the entire system.
Roman engineers selected stone blocks cut to fit securely, forming a channel at the top that guided water across open terrain and uneven ground. The aqueduct was not decorative. It was functional infrastructure supporting urban life, public baths, fountains, and households.
The arches remain.
The water once followed mathematics carved into stone.