Madrid has a lot of hidden gems and the Monastery of San Lorenzo de El Escorial is one of them. This place has been considered by some as the "Eighth Wonder of the World", thanks to both its size and its enormous symbolic value. This 2-hour tour is designed to show you some of the rooms in this world-famous monastery, and let you in on what happened within its walls and discovering the secrets and mysteris of this building built in the XVI century. Find out why Felipe II, King of Spain (1556–1598), chose this location at the foot of the Sierra de Guadarrama as you tour the basilica, the battle hall, the pantheon – where the kings are buried – the palatial rooms, and even the famous library. This is where Felipe II kept his volumes, and spent hours reading!