The Holy Monastery of Simonopetra was founded in the 13th century upon a rock by Saint Simon and celebrates the Feast of the Nativity of Christ. The rock upon which Simonopetra is built has a height of 300 meters above sea level. Simonopetra appears from the sea as a combination of three seven-story apartment buildings. It has been destroyed by fire many times. The miracle-working left hand of Saint Mary Magdalene is treasured in the monastery. The library, scientifically sorted and organized, totals today about 32,000 volumes of printed books.