El Escorial is a popular destination for tourists in Spain. It is most famous for being the palace and home of King Philip II and a UNESCO World Heritage site. It is an impressive and historically significant site which represents a unique example of Renaissance architecture. Tourists enjoy visiting the royal palace and its complex of buildings, gardens and chapels. This is also home to the library, which contains over 40,000 books and manuscripts, the Pantheon of Spanish monarchs, the Royal Crypt and the San Lorenzo Museum. The nearby Valle de los Caídos (Valley of the Fallen), a memorial to the victims of the Spanish Civil War, is also a popular draw for tourists.