In the 14th century, Olivier III de Clisson incorporated the gatehouse into a massive quadrilangular keep.

At the same time, the castle was enlarged to the west with a new rectangular enclosure nearly 100 m long, armed with towers with artillery casemates.

Around 1590, the troubled period of the French Wars of Religion necessitated the construction of three terraced bastions on the south.

The remains of the castle were classed as a monument historique by a French Ministry of Culture decree of 13 August 1924.

[1] In 1962, the castle was sold by the Lamot family to the Conseil général of the Loire-Atlantique, who carried out important restoration works with the assistance of the French Ministry of Culture.