The crossing of the Alcântara valley, stands out along its 941 meters long and with arches that reach the 65 meters of height. National monument.
Built between 1731 and 1799, the Águas Livres Aqueduct was a vast system of collection and transportation of water, through gravity, which comprises a total of 58 kilometers of existing pipelines between the springs, located 15 kilometers to the northwest of Lisbon and the water standposts in the capital.
In its path, the crossing of the Alcântara valley, stands out along its 941 meters long and with arches that reach the 65 meters of height.
The route is open to visitors between Campolide and the Parque Florestal de Monsanto. It has been classified as a National Monument since 1910.
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