Timeline

Heritage classified

Key figures

Origin and history

The Castle of Ranrouët, erected around 1125 by the lords of Assérac on a feudal motte, became a stone castle in the 13th century under Alain d'Assérac. Located on the edge of the Brière marsh, it takes advantage of this wetland as a natural defence. The fortress, typical of Breton military architecture, passes into the hands of three large families: d-Assérac, Rochefort, then Rieux, which adapts it to the evolutions of war techniques, especially in front of artillery.

In the 14th century, Guy de Rochefort modernized the castle by digging moats and adding a circular boulevard, transforming the archères into cannon guns. In the 15th century, John IV de Rieux, close to Anne de Bretagne, partially rebuilt Ranrouët after its destruction in 1488, thanks to a financing of ECU 100 000. The castle then became a mixture of fortress and seigneurial residence, with a sumptuous house body and an innovative staircase for the time.

The Wars of Religion marked a turning point: John VIII of Rieux, a member of the League, was hanged in 1593, and the castle passed under royal control. Occupied by unpaid soldiers, he was partially dismantled in 1618 before being rebuilt by John IX of Rieux. In 1793, a republican army burned him to ruin. Abandoned, he served as a stone quarry until his acquisition in 1929 by the Menager family, which began consolidation work.

Ranked a Historic Monument in 1925, the site was acquired in 1989 by the Loire-Atlantique General Council. Since the 1970s, archaeological excavations have revealed remains like a paved kitchen. Today managed by Cap Atlantique, the castle visits and offers educational activities, demonstrating its key role in the military and seigneurial history of Brittany.

Future

The castle is visited and is the subject of educational activities.

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