Château de Saint-Michel-du-Lac en Haute-Savoie

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Origin and history

The castle of Saint-Michel-du-Lac, built in the 13th century, was a strategic castle located in the Haut-Faucigny, at the entrance of the Chamonix valley. Built on a promontory above Servoz (currently on the territory of Houches, Haute-Savoie), it controlled access to the valley from the Arve valley. Its ruins, still visible, recall its defensive role and its link with the tensions between the Counts of Geneva and the lords of Faucigny.

The first mention of the castle dates back to 1289, during an exchange between Richard de Villette, prior of Chamonix, and Béatrice de Faucigny. The latter gave him in fief the "Mollard du Lac" with its existing buildings, suggesting that a fortification already occupied the site. Béatrice built a castle there to protect the priory of Chamonix, then under his care, and thus reinforced his influence in a region that had been disputed for two centuries. The treaty was ratified in 1290 by the Abbé de Saint-Michel-de-la-Cluse.

The castle becomes a point of tension between the prior and the chestnuts appointed by the Faucigny. In 1300, an arbitration decided in favour of the prior, recalling the spiritual primacy of the priory over the temporal seigneury. In 1319, the site is mentioned as a castrum Sancti Michaelis de Lacu in an act between Guillaume de Villette and Hugues, a dolphin of Vienna. In 1339, it was erected as a Delphinal chestnut, marking its administrative importance.

The loss of its strategic role occurred in 1355, when the Faucigny came under Savoyard control. The castle was handed over to the priory in 1435, losing its military function. Its remains, described as a rectangle of 30 m by 13 m with a round tower, inspire later legends, such as that of a cursed treasure or satanist cults. Victor Hugo, in 1825, gives a romantic description in Fragment d'un voyage aux Alpes.

The site, which was difficult to access, was a refuge for local populations in case of danger. Its position overlooking the Arve and the railway towards Chamonix made it a key place for controlling exchanges between the valleys. Today, it attracts visitors for its medieval history and landscapes, although only a few walls and a partially collapsed tower remain.

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