Akova Castle, Medieval castle in Gortynia Municipality, Greece

Akova Castle is a medieval stone fortress sitting atop a steep hill with natural defenses on three sides, commanding views of Arcadia's mountainous terrain. The structure is built upon the foundations of an ancient acropolis, integrating the earlier site into its position.

Akova was the seat of the Barony of Akova, one of the most important lordships of the Frankish Principality of Achaea, founded in the Morea after the Fourth Crusade. The castle is also known as Mattegriffon. The barony's rank placed it among the leading fiefs of the principality.

For about forty years the nearby village of Vyziki has organised a summer festival at Akova, with theatrical performances and other cultural events held at the castle. The productions take place among the medieval walls on the steep hill above the village.

Reaching the fortress requires hiking up a rocky path, so sturdy shoes and plenty of water are essential for the visit. The cooler hours of early morning or late afternoon work best for the climb.

The castle also carries the name Mattegriffon, a Frankish form attached to the site during the Principality of Achaea. The hill itself is sheer on three sides, which is why the medieval builders chose it and why the approach today comes from a single direction.