It preserves parts of the Romanesque style; the church is Gothic and part of the façade dates from the eighteenth century. Since 1942 it has been inhabited by Cistercian monks and produces wines and liqueurs from medicinal herbs. This monastery received the Cid at the time of his exile, along with his wife and daughters, and they lived there until the end of his life.
The monastery of San Pedro de Cardeña is a Trappist abbey located in the municipality of Castrillo del Val. Its building has undergone numerous restorations, thus coexisting various styles.