The castle of Koroni was built by the Venetians at the end of the 13th century and is located on the southeastern edge of the Messinian Gulf. Along with the castle of Methoni, it was a very important commercial center and the most important hub for communication between the western and the eastern world.
Its strategic location was a reason of conflict between Venetians, Ottomans and Franks, as its domination enabled the total domination of the region.
The castle is a fine example of Venetian fortification technique with the massive gates, the underground passages, the sturdy walls and the square towers. The tumultuous events of the history of the castle led to numerous folk legends, many of whom had a kernel of truth.
The castle is located at the highest part of the peninsula of Koroni and from its top, the view of the Messinian Gulf is breathtaking.