The Valley of the Fallen, is a Catholic basilica and a monumental memorial in the municipality of San Lorenzo de El Escorial, erected at Cuelgamuros Valley in the Sierra de Guadarrama, near Madrid. Dictator Francisco Franco claimed that the monument was meant to be a "national act of atonement" and reconciliation. It served as the burial place of Franco's remains from his death in November 1975 until his exhumation on 24 October 2019, as a result of efforts to remove all public veneration of his dictatorship, and following a long and controversial legal process.
The monument, considered a landmark of 20th-century Spanish architecture, was designed by Pedro Muguruza and Diego Méndez on a scale to equal, according to Franco, "the grandeur of the monuments of old, which defy time and memory." Together with the Universidad Laboral de Gijón, it is the most prominent example of the original Spanish Neo-Herrerian style, which was intended to form part of a revival of Juan de Herrera's architecture, exemplified by the nearby royal residence El Escorial.