Monastery, church and site, Trappist monastery on a hilltop in Sierre, Switzerland.

The Couvent de Géronde is a Bernardine nunnery of the Cistercian Order of Strict Observance on the largest hill south of Sierre. Its conventual church, built 1425–1430, has an 11th-century Romanesque base, a 15th-century Gothic choir and an 18th-century Baroque nave vault, with Gothic stalls carved around 1430 and 1965 stained glass by Sister Marie-Jean. The hilltop also holds remains of a Carolingian chapel dedicated to Saint Felix.

The hill was the heart of early Sierre, with Bronze Age tombs and a Carolingian chapel to Saint Felix. Augustinian canons are recorded in 1233; Bishop Aymon de la Tour founded a charterhouse in 1331, replaced by Carmelites from 1425 to 1644, then Jesuits. From 1894 the Sisters of the Holy Cross ran a school for the deaf, and Bernardine nuns from Collombey arrived in 1935, joining the Trappist order in 2008.

The nuns make their living by baking communion hosts and sewing liturgical vestments, alongside tending vines, vegetable gardens and orchards. The church keeps Gothic choir stalls carved around 1430 and stained-glass windows made in 1965 by Sister Marie-Jean (Myriam Olsommer, 1935–2017), a member of the community. Five guest rooms are reserved for individual retreats.

The grounds are open at set times, and group visits work best when arranged ahead through the administrative office. Respectful dress is expected since the nuns maintain an active prayer schedule throughout the day.

The church keeps 1965 stained-glass windows made by Sister Marie-Jean (Myriam Olsommer, 1935–2017), a member of the community. A fire on 1 May 1980 destroyed the upper part of the building but spared the Saint-Martin chapel with its Gothic stalls carved around 1430.