This Renaissance and Baroque style building dominates the valley, thanks to its impressive size, the result of a prolonged period of frenetic building activity between the 16thC and 18thC; in fact, it has even been called the “El Escorial” of La Rioja. The monastery houses an extensive collection of art, including twenty-two canvases by Juan de Rizzi (considered to be the leading Spanish cloister painter) and some important 17thC coppers.