The monastery Skevophylakion, the Treasury, is located adjacent to the basilica, along the north wall of the monastery. Icons, manuscripts, vestments, and objects of ecclesiastical metalwork are on display in these rooms. These include some of the most important treasures of the monastery, including icons dating from the sixth century, and illuminated manuscripts from Constantinople.

These objects are on display in rooms that were used from ancient times for the safekeeping of the treasures of the monastery. And any of the objects could be removed from the display cases and used in the church even today. It is important to remember that these are still living objects, and not objects whose use has ceased.