Free guided tours to Canal de Isabel II's Fourth Deposit in Madrid

The Community of Madrid offers the opportunity to explore this historic water supply infrastructure, crucial for the region.

Interior view of the Fourth Deposit of Canal de Isabel II, showing its arched ceilings and water channels.
IA

Interior view of the Fourth Deposit of Canal de Isabel II, showing its arched ceilings and water channels.

The Community of Madrid has organized free guided tours of the Fourth Deposit of Canal de Isabel II, located in Plaza Castilla, to introduce citizens to an essential water supply infrastructure for the region.

The initiative, aimed at individuals over 14 years old, is part of the public company's 175th-anniversary commemorations and will take place on September 19 and 20. Two morning sessions will be held each day, at 11:00 AM and 1:00 PM, with 60 spots available per session.
Advance registration is mandatory and will open tomorrow at 10:00 AM via an Eventbrite link. The 240 available spots will be assigned on a first-come, first-served basis. The tours, lasting approximately 90 minutes, will be led by Canal employees who will share historical anecdotes and details about its current operation.
Attendees will receive information on historical deposits, their evolution, their significance within the supply system, their heritage value, and their contribution to the origin of modern water supply and regional development.
Through these open-door events, Canal de Isabel II reaffirms its commitment to community engagement, showcasing water processes and raising awareness about the importance of rational and sustainable water use.
The Fourth Deposit, designed to store water from the Canal Alto, was constructed between 1930 and 1933, though its operation was delayed until 1940, with the infrastructure filling with water in September 1942. Originally built with a capacity of 180,000 cubic meters, it remains operational today with 144,000 cubic meters after partial rehabilitation as an exhibition center, supplying water to approximately 250,000 inhabitants in Moncloa, Chamberí, and Ciudad Universitaria.
Based on information from the official source: Comunidad de Madrid — Notas de prensa (08/09/2026)