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Origin and history

Suscinio Castle, built at the end of the Middle Ages on the Rhuys peninsula, was the residence of the Dukes of Brittany. It is mentioned for the first time in 1218 in a letter from Pierre de Dreux, Duke of Brittany, who began construction between 1213 and 1237. This first manor, probably a hunting relay, was enlarged by his son John I, who added a large north court and a quadrangular tower. The site, both defensive and residential, also housed the Ducal Treasure and archives, while serving as a recreational place surrounded by woods and parks.

In the 14th century, during the Montfort dynasty, the castle was strengthened and embellished, notably by the Dukes John IV and John V. These works added gardens, a large house in the east, and monumental towers surrounding the entrance. Despite its limited role during the War of the Succession of Brittany, Suscinio became a symbol of dual power, combining defense and luxury. At the end of the 15th century, its appearance was close to that seen today, with a polygonal shape and deep moat.

After the disappearance of the Dukes of Brittany, the castle changed hands several times: given to the Prince of Orange, taken over by Anne of Brittany, then ceded to Diane de Poitiers before being redeemed by the French crown. In the 16th century, he was transformed into a captain's office and suffered damage during religious conflicts. The risky management of successive governors, combined with storms and local impoverishment, accelerated its degradation. Sold as a national property in 1798, the ruin was partially saved by private owners before its acquisition in 1965 by the Morbihan Departmental Council.

As a historical monument since 1840 thanks to Prosper Mérimée, Suscinio was the object of major restoration campaigns since the 1960s. Archaeological excavations, especially those of 2013, revealed key elements such as the kitchens of the North House or the pavements of the chapel Saint-Nicolas, which disappeared in the 14th century. Today, the castle, surrounded by moat and flanked by seven towers, offers an exceptional testimony of Breton ducal architecture, mixing military and residential functions.

The chapel of Saint-Nicolas, outside the enclosure, illustrates the fascist of the Dukes of Dreux. Its alphabetical pavement, discovered in 1975, remains an archaeological mystery. The bastions added in the 16th century, under the influence of conflicts with England and Spain, marked a late defensive adaptation. Despite the revolutionary destructions, modern restorations gave the castle a close appearance to its medieval climax.

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