San Juan de la Peña

The monastery of San Juan de la Peña is a religious complex and was one of the most important monasteries in Aragon in the Middle Ages. Its two-level church is partially carved in the stone of the great cliff that overhangs the foundation. Legend said that the chalice of the Last Supper (Holy Grail) was sent to the monastery for protection and prevention from being captured by the Muslim invaders of the Iberian Peninsula.