Upon arrival in Lisbon, the water transported by the Águas Livres Aqueduct was channelled to the approximately 30 fountains located in several points in the city, especially in the western area, through a network made up of five galleries, mostly underground, with a length of around 12 Km.

The five Águas Livres Aqueduct’s underground galleries were named according to their geographical location:

• Campo Santana Gallery | Opened in 1784. It is part of the General Aqueduct, upstream of Arco do Carvalhão in Campolide and it ends on Campo Santana. It has branches to São Sebastião da Pedreira, Largo do Intendente and Hospital de São José
• Necessidades Gallery | Opened in 1752. It is part of the General Aqueduct in the area of Arco do Carvalhão in Campolide, and ends in the area of Necessidades
• Loreto Gallery | Opened in 1746. It is part of the Register House, next to Mãe d’Água das Amoreiras and heads over to the Largo do Diretório do Teatro Nacional de São Carlos. It had branches to Praça da Alegria, Rua do Século (former Rua Formosa), Largo do Carmo and Largo de São Paulo
• Esperança Gallery | Opened in 1752. It is part of the Register House, next to Mãe d’Água das Amoreiras and heads over to Esperança fountain, located nowadays on Av. D. Carlos I. It had branches to Cais do Tojo fountain or Boavista Fountain
• Rato Gallery | Opened in 1753. It departs directly from the Mãe d’Água das Amoreiras Reservoir to Rato Fountain