Located on the main façade of the First Reservoir of the Canal de Isabel II, in the middle of Calle Bravo Murillo in Chamberí, this mural fountain, created by the engineer Juan de Ribera Piferrer to commemorate the project to bring water from the Lozoya River to Madrid, was opened to the public on 21 July 2025, after the fencing surrounding it was removed and the entire area underwent renovation work.
Known as “Madrid's Trevi Fountain”, it was designed as a classical triumphal arch, with a central niche boasting a monumental personification of the Lozoya River by the sculptor from Madrid, Sabino de Medina Peñas. To its left, there is an image representing Agriculture, created by the sculptor from Galicia, Andrés Rodríguez, and to its right, there is another image representing Industry, which is the work of José Pagniucci Zúmel from Madrid.
Construction of this exceptional architectural and sculptural ensemble began in 1856, when the perimeter walls of the reservoir had already been built, and it was completed in 1860, when the infrastructure was already in service.
In 1977, the reservoir complex, its fountains and other buildings of the Canal de Isabel II were declared a Historic Monument.