The Diocese of Chur is a Roman Catholic diocese located in the eastern part of Switzerland. Established in the 4th century, it is one of the oldest dioceses in the country. The diocese covers the cantons of Graubünden and parts of St. Gallen, serving a diverse population with various parishes and communities. The diocese is governed from its capital, the city of Chur, which is also the oldest city in Switzerland. The Bishop of Chur oversees the spiritual and administrative needs of the diocese, ensuring the continuation of Catholic traditions and practices in the region.