Cuort Ligia Grischa, Heritage museum in Trun, Switzerland.

Cuort Ligia Grischa is a local museum in Trun that displays objects, artworks, and exhibitions documenting the Surselva region across multiple periods. The collection spans several rooms, including a heraldic chamber with historical coats of arms and a section featuring detailed inlaid woodwork made from regional timber.

The core of the present building was erected from 1674 to 1679 under Prince-Abbot Adalbert II. de Medell, directed by master builder Pedrut de Rungs of Val Lumnezia, replacing at least two earlier structures. From 1424 Abbot Peter von Pontaningen had made the site available to the Grey League as a meeting and court venue. After 1859 it passed into private ownership and served three families until the canton and a committee bought it back in 1934.

The name Cuort Ligia Grischa means "Court of the Grey League" in Sursilvan Romansh; German speakers call it Disentiser Hof. Each 23 April, the Jörgentag, delegates of the Grey League met in the Landrichtersaal under the Landrichter to elect officials and pass judgment. The ceiling painting shows the league's founding under the maple of Trun, with the coats of arms of the three leagues and the villages that joined.

The museum occupies the upper floors of the baroque abbey court, reached by stairs; the Landrichtersaal and the abbot's rooms are on the second floor, Pater Placidus a Spescha's rooms on the first. The building stands at the western edge of Trun, a short walk from the village centre.

The Landrichtersaal ceiling painting shows the founding of the Grey League under the maple of Trun, with the coats of arms of the three leagues and of abbots Adalbert II and Adalbert III. On the banners of the painted putti are the arms and names of the member communities; the wall shields list 72 names of the league's Landrichter, though the early period is incomplete.