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Origin and history

Château de Châtillon-sur-Cluses is an ancient castle built in the 12th century, whose ruins stand on a rocky spur at 862 meters above sea level, in the commune of Châtillon-sur-Cluses (Haute-Savoie). It controlled the Châtillon Pass and the roads between the Giffre and Arve valleys, in the heart of the province of Faucigny. Its remains, organized in three successive enclosures, include a castral chapel, a seigneurial residence and a Roman dungeon, reflecting its evolution between the 13th and 16th centuries.

Between the 13th and 16th centuries, the castle was the seat of a chestnutry comprising thirteen parishes, then the center of the bailliage of Faucigny. A privileged residence for the lords of Faucigny, he welcomed major events such as the engagement of Agnes de Faucigny with Pierre II de Savoie (1234) and Béatrice de Faucigny with the dolphin Guigues VII (1241), both celebrated in his chapel. The site was also reinforced by works commissioned by Pierre II de Savoie (1260, 1263) and by Countess Bonne de Berry, who built a tower around 1380.

The castle passed under Savoyard control after the Treaty of Paris (1355) and underwent modifications until the 15th century. It was briefly occupied by revolted peasants ("Red Robes") in 1492 before being abandoned in the 16th century, then serving as a prison. Its destruction, often attributed to the conflicts of 1589, remains undocumented. The ruins, gradually dismantled to serve as a career, were subdued in 1699 to the Dufrenoy family, marking the end of its military role.

The châtellenie de Châtillon et Cluses, created in 1357, was the most important in Faucigny, bringing together parishes such as Cluses, Marignier or Saint-Sigismond. The castle was also home to the archives of the châtellenia, whose rolls of accounts (XIVth–XVIth centuries) illuminate its administrative organization. Its decline began with the transfer of the siege of the bailiff to Cluses and its gradual abandonment, despite seigneurial prerogatives maintained until the 18th century.

Architecturally, the castle was built around a single castle (first enclosure with chapel and cemetery), a seigneurial residence (second courtyard) and a Roman dungeon (XII century) in the east. A nearby hill, the "Cuar", may have been home to an anterior wooden fortification and offered a lookout on the valley. Excavations and written sources (such as the work of archaeologist Louis Blondel) partially reconstruct his plan, marked by successive changes.

Today, the remains of the Château de Châtillon-sur-Cluses, though partial, illustrate its strategic and symbolic importance in the history of the Faucigny. Ranked among the major Savoyard castles, it reflects the political dynamics between the houses of Faucigny, Savoie and Dauphiné, as well as the evolution of medieval defensive systems in the mountains.

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