The remains of the Castle can be visited
Moregg Castle (Ruin) (Obersaxen)

The Moregg ruin is a historic castle complex in the municipality of Obersaxen in the Swiss canton of Graubünden.
History+
Written records about the origin and early history of Moregg Castle have not survived. It is presumed that the castle was built in an area already inhabited by Rhaeto-Romanic settlers before German-speaking immigrants established themselves there. The name Moregg might be derived from a personal name, as no knightly families with this name are associated with the region. In 1468, the "guot Moreck" appeared in an inheritance dispute, indicating that the castle and its associated estate belonged to the Rhäzünsers. When the local Walser people received lower jurisdiction in the mid-14th century, the Rhäzünser ministerials lost their function, and Moregg Castle was abandoned.
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: 46.7592, 9.1319