Saint John Abbey built
701 CE.
Shown on the map at 46.629°, 10.448°.
The Abbey of Saint John (German: Benediktinerinnenkloster St. Johann; Romansh: Claustra benedictina da Son Jon) is an early medieval Benedictine monastery in the Swiss municipality of Val Müstair, in the Canton of Graubünden. By reason of its exceptionally well-preserved heritage of Carolingian art, it has been a UNESCO World Heritage Site since 1983.
Text from the Wikipedia article Saint John Abbey, Müstair, licensed CC BY-SA 4.0.