The Castle can be visited
Fraubrunnen Castle

Fraubrunnen Castle, a former Cistercian convent, is located in the municipality of the same name in the canton of Bern, Switzerland. Its history dates back to the 13th century and continues to shape its appearance as a building of regional significance.
History+
The origins of Fraubrunnen Castle lie in the founding of the Fons beatae Mariae women's convent in 1246 by the Cistercian order. Counts Hartmann IV and V of Kyburg ceded the area near Mülinen to the order. The convent quickly acquired extensive landholdings and developed into one of the women's convents in the Swiss Central Plateau. After a fire in 1280, it was rebuilt. In 1375, the convent was attacked by the Guglers and destroyed again during a skirmish with Bernese troops. After a slow recovery and its transfer to Bernese rule in 1420, secularization occurred in 1528 during the Reformation.
Source: Wikipedia · Licence: CC BY-SA 4.0
This description draws on the facts documented in the linked Wikipedia article; Wikipedia content is licensed under CC BY-SA 4.0. Wording and editing: Mobile History.
Location: 47.0849, 7.5267