La Valsainte Charterhouse
Val-de-Charmey, Switzerland · built 1295
La Valsainte Charterhouse or La Valsainte (Vallis sanctorum omnium, later Vallis Sancta) situated in La Valsainte in the district of Gruyère, Canton of Fribourg, is the only remaining extant Carthusian monastery in Switzerland.
Monastery data from Wikidata (CC0). Summary from Wikipedia (CC BY-SA).