The Monastery of Saint John the Theologian
The monastery Christodoulos founded on Patmos was dedicated to Saint John the Theologian (the Evangelist), on the island traditionally associated with the writing of the Book of Revelation. It was built on a site where a chapel to St John already stood, over the ruins of an earlier basilica, and the buildings stand to this day.
He governed the community according to his own monastic rule, the Hypotyposis, completed in 1091 and shaped by the disciplines he had absorbed at the Mar Saba Monastery in the Holy Land.