The Roman Catholic Diocese of Chur is a diocese located in the eastern part of Switzerland. It is one of the oldest dioceses in the country, established in the 4th century. The diocese covers the cantons of Graubünden and parts of St. Gallen, serving a diverse population with various parishes and communities. The diocese is led by a bishop, currently Bishop Joseph Maria Bonnemain, who oversees the spiritual and administrative needs of the Catholic community. The diocese is known for its rich history, beautiful churches, and commitment to pastoral care, education, and social services within the region.