The Cathedral of Saint Mary of the Assumption (German: Kathedrale St. Mariä Himmelfahrt) is the Roman Catholic cathedral of the diocese of Chur in Switzerland. The episcopal palace of the bishop of Chur is beside the church. The cathedral claims the relics of St Lucius of Britain, said to have been martyred nearby in the late 2nd century. During the Swiss Reformation, the Catholic population of the city were confined to a ghetto enclosed around the bishop's court beside the cathedral.
Coordinates: 46°50′52″N 9°32′07″E / 46.84778°N 9.53528°E