The Castle of Kyparissia in the Prefecture of Messinia is one of the most beautiful in the Peloponnese. It has been built on the site of the ancient citadel on the foundations of a Byzantine fortress. Its present form was formed mainly during the Frankish period and is associated with the well-known Villehardouin family. The proposed project includes work on the fixing of the rock mass and the foundations of the surrounding walls of Kastro, in order to address the stability problems it faces and to be safely attributed to visitors of the monument.