Liège Cathedral, otherwise St. Paul's Cathedral, Liège, in Liège, Belgium, is part of the religious heritage of Liège. Founded in the 10th century, it was rebuilt from the 13th to the 15th century and restored in the mid-19th century. It became a Roman Catholic cathedral in the 19th century due to the destruction of Saint Lambert's Cathedral in 1795. It is the seat of the Diocese of Liège.