Located in a broad open valley giving onto the Cantabrian Sea, Mondoñedo is one of the most evocative capitals of the ancient Kingdom of Galicia. Its historic quarter has been declared a Property of Cultural Interest.
The Cathedral-Basilica of La Asunción, a national monument, still conserves the original Romanesque doorway; other features include a lovely rose window and Baroque towers. The transept and sacristy were built at a later date in the Gothic style. The interior also features a juxtaposition of styles, with mural paintings dating from the 15th and 16th centuries, Baroque organs, Gothic and Renaissance choir stalls and a rococo-style main altarpiece. It is home to the diocesan cathedral museum, one of the most important religious art museums in Spain.