The Castle of Agios Georgios (Saint George) is situated 5 km away from Argostoli, above the village Peratata on a hill about 300 m high. It is probably built in the 12th century AD by the Byzantine emperors.
It is a remarkable Venetian castle with later interventions mainly from Enetians in the 16th century AD which dominates the southern part of Kefalonia and the bay of Argostoli. The castle was the capital of Kefalonia until 1757. In recent years the castle had several maintenance works in order to regain part of its old glory.
The outside walls which are preserved until today were built in 1504 by the Enetians. Churches and other buildings are still standing. In the main yard (Βorgo), east of the entrance, the Cathedral of Evangelistria (Annunciation), a typical example Ionian Baroque is still presenting the old glory.
Inside significant post-Byzantine icons from the ruined temples of the Castle are retained. There are still remnants of a bridge build during the period of the French occupation of the island.
In the courtyard of the fortress near a small square, you will see the ruins of the Catholic Church of Agios Nikolaos (Saint Nicholas).
The castle was damaged by earthquakes in 1636 and 1637. The last earthquake of 1953 caused considerable damage. Historically we also are aware of the existence of a tunnel, connecting the castle with Argostoli, but this has not been revealed or investigated so far.
Be careful because the castle is open during the summer months only so get informed about the opening hours if you decide to visit it any other time of the year.