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Origin and history

The Chartreuse de Pierre-Châtel finds its origins in a 13th century Savoyard castle built on a strategic rocky spur controlling the road to Piedmont. The site, mentioned in 1149 under the name Petra Castri, became Comtal residence of Savoy before being bequeathed in 1383 by Amédée VI to the order of the Chartreux. The monks then transformed the fortress into a fortified monastery, keeping a garrison until 1583 despite the Cartus rule.

Work began in 1384 with the construction of the church (completed in 1395) and cloisters, while the castral chapel, adorned with murals, existed at the foundation. In 1391 the Chartreuse, prosperous, incorporated the maladry of Yenne. After the ravages of the Franco-Savoyard wars (1589–1599) and the transfer of Bugey to France in 1601, the monastery was rebuilt from 1666, with fortifications strengthened in 1760. The monks then add a refectory decorated with a painted Supper and a prioral house.

The Revolution forced the Chartreux to leave in 1791, after the abolition of the monastic vows. The site, sold as a national property, was reused as a military fort in the 19th century (1825–1933), before being classified as a historic monument in 1996, then in 2015 for all its remains: enclosures, towers, gardens, and traces of the Comtal castle. Today, it is privately owned and bears witness to the unique alliance between monastic life and strategic defence at the borders of Savoy.

The toponym Pierre-Châtel comes from the rock (petra) on which the castle was built, evoked as early as 1258 in the form Petra Castelli. The site, dominated by the Counts of Savoy such as Amédée III or Peter II (who wrote his will there in 1268), illustrates their control over the Rhodanian axes. After 1607, the Order chapel was transferred to Turin, marking the Savoyard decline of the place. The current remains thus combine medieval architecture, 17th–15th century developments and 19th century fortifications.

The priors of Pierre-Châtel, both religious and military governors, embody this duality. Their list, drawn up by historian Jean Létanche (1909), covers 1383-1791. Among them, the prior of Aillon supervised the first works in 1384. The cartreuse, classified with its 23 cadastral plots, also includes the remains of the 19th century fort, symbolizing its successive metamorphoses.

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