El valle de los caidos located just outside of Escorial in Spain is one of the largest Catholic basilicas in the world. Built during the Franco regimen, the basilica and memorial is quite controversial. It was built by many who were imprisoned and forced to work by the government for their beliefs. It is a memorial to those who died in the Spanish Civil War (1936-1939). The grounds are beautiful, but the story behind it is very controversial and melancholy for many Spaniards.