La Valsainte Charterhouse, Carthusian monastery in Val-de-Charmey, Switzerland.

La Valsainte Charterhouse is a functioning Carthusian monastery in the Gruyere region of Switzerland, set in a narrow valley surrounded by forested slopes. The complex brings together a public chapel, individual monks' cells, and shared work areas within a cluster of stone buildings that grew over several centuries.

The monastery was founded in 1295 and was nearly destroyed by a fire in 1381 that forced a major rebuilding. In the late 1700s, it opened its doors to monks from other orders who had fled conflict in France.

The house language is French, though a large share of the monks are German-speaking, and the community has been the only active Carthusian one in Switzerland. Since 1976 the monastery can no longer be visited, so the life of prayer, reading and manual work goes on without visitors. The 1729 church facade carries the motto "Soli Deo" ("For God alone").

The monastery lies in the Javroz valley near Cerniat, in the municipality of Val-de-Charmey. Since 1976 it can no longer be visited, so there is no public access to the buildings or the chapel. The site is reached on foot via local trails; the collapse of parts of the monastery wall in 2000 led to restoration work completed in September 2008.

The monastery was suppressed in 1778 with papal approval, and its monks moved to La Part-Dieu. Trappists fleeing the French Revolution occupied it from 1791 to 1798, Redemptorists lived there from 1818 to 1824, and after being sold it was demolished except for the 1729 facade. Carthusians from La Part-Dieu bought it back in 1861 and rebuilt it.