Water Museum - Underground galleries of the Águas Livres Aqueduct

The water carried by the Águas Livres Aqueduct, from Lisbon, was conducted through an emissary network that consisted of five galleries, mostly underground, with about 12 kilometers long, whose job was to ensure the supply of water to fountains and some public establishments: Campo Santana, Necessidades, Loreto, Esperança and Rato.

The Loreto Gallery, built in 1746, stands out with its route currently open to visitors between the Casa do Registo in Rua das Amoreiras, the Patriarchal Reservoir, Rua do Século and the Mirador of São Pedro de Alcântara.