Timeline

Heritage classified

Key figures

Origin and history

The Guildo Castle is a 3,200 m2 castle-yard located on a rocky spur overlooking the estuary of the Arguenon, in Créhen (Côtes-d'Armor). Joined the historical monuments in 1951, it has been part of the departmental council since 1981. The site, searched since 1982, reveals six phases of development between the 12th and 16th centuries, with remains of house, commons, and 14th century polychrome murals.

The first occupations date back to the 12th century, with a mixed stone house and perishable materials, suggesting a noble presence. In the 13th century, a stone castle inspired by the French royal achievements was built, with refined painted decorations. Destroyed in the middle of the 14th century during the War of the Succession of Brittany, it was rebuilt before 1400 with a North house, communes, and a central well.

In the 15th century, the castle was transformed for Françoise de Dinan, wife of Gilles de Bretagne and then of Count Guy XIV de Laval. The facilities include a stable, a marshalry, and well-kept apartments, reflecting its high status. The Crazy War (late 15th) led to a re-defense: roofs dismantled, poterne added, and cellars renovated for horses. The castle was finally razed in 1489 during the campaign of Louis II de la Tremeille.

In the 16th century, only the eastern wing was rebuilt, with an artillery bastion added at the end of the century to adapt to the wars of the League. The castle, besieged on several occasions, fell into ruins in the 17th–15th centuries: its courtyard was cultivated in corn as early as 1770, and its stones were sold as a quarry in the 19th century. Since 1982, archaeological excavations and restoration sites (notably by the association Études et Chantiers Bretagne) have revealed 75% of the site.

Among the notable lords are the family of Penthièvre (XI century), Charles de Dinan-Montafilan (XIVe), and Françoise de Dinan (XVe), whose rank marked the peak of the castle. Today in free access, the site offers a 3D reconstruction of its state in the 14th century, illustrating its strategic and architectural importance in medieval Brittany.

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