Since the beginning of the twenty-first century, Spain has experienced a cycle of exhumations of the mass graves of the Spanish Civil War (1936–39) and has rediscovered that the largest mass grave of the state is the monument that glorifies the Franco regime: the Valley of the Fallen. Building work in the Sierra de Guadarrama, near Madrid, was begun in 1940 and was not completed until 1958. This article analyses for the first time the regimes wish, from the start of the works, for the construction of the Valley of the Fallen to outdo the monument of El Escorial. At the same time the regime sought to create a new location to sanctify the dictatorship through the vast transfer to its crypts of the remains of the dead of the opposing sides of the war.