The remains of the Castle can be visited
Turraccia Castle (Ruin) (Casaccia)

The Turraccia ruin, also known as Casaccia, is a former hilltop castle located above the village of the same name in the canton of Graubünden, Switzerland. Its strategic position near the historic Septimer and Maloja passes once made it an important point in the region.
History+
The exact history of the Turraccia castle's construction is not documented in written records, but its architectural style suggests it was built around the year 1200. It is believed to have belonged to the Bishop of Chur and served as the seat of a vogt. The name "Turraccia" derives from the Italian "Torre" (tower), supplemented by a pejorative suffix, indicating a "bad tower." When and why the castle was abandoned remains unknown.
Location+
The Turraccia ruin is situated in Casaccia, in the Maloja district of the canton of Graubünden, Switzerland, at an elevation of approximately 1495 m above sea level.
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: 46.3923, 9.6654