This colossal aqueduct is part of a hydraulic system which brought waters from the Proserpina Dam, also known as the Albuera Reservoir. It is popularly known as “Los Milagros” ("The Miraculous One") because of the admiration that its state of conservation brings about in locals and visitors, especially considering the vicissitudes of time. It lives up to its popular name, as more than eight hundred meters of this aqueduct still stand today and some of its brick and granite support structures rise twenty-seven meters above the ground. If you look closely at the monument, you'll notice an interesting detail: the area through which the Albarregas River flows is highlighted on the aqueduct with a beautiful arch made in granite ashlar masonry.

At the north end, where the valley of the Albarregas River starts, the construction had a type of pool to purify the water (piscina limaria – lime pool), which likewise served as a water source. As the thalweg becomes more pronounced, the height of the support piles and the number of arcades increases; all so that the hydraulic system remains suspended at the perfect height for water to flow into the city.

This structure seems to have been built at a time close to the Colony's founding, although several subsequent reforms are evident.