Saint Christodoulos amassed a huge number of religious documents and objects during his extensive travels. In the will he wrote shortly before dying in 1093, he bequeathed the materials to the monastery. The collection has since swelled to 3,000 books, 900 manuscripts and 13,000 documents plus jewels, silverware, icons, vestments and relics. This priceless agglomeration is divided between the Treasury and the Library. The latter is typically closed except by special permission. But you will be amazed by the exhibits inside the Treasury (also called the monastery’s museum).