It is a Cistercian monastery located in the municipality of Vallbona in the county of Urgell.
Founded in the first half of the twelfth century, is the most important Cistercian monastery in Catalonia. The church is a fine example of Romanesque-Gothic transitional. The Latin cross plan consists of a single rectangular nave and three apses decorated with sculpture. Each of the galleries of the cloister is a different style: Arabic, Gothic and Romanesque. The chapter house (fourteenth century) has an image of Our Lady of Mercy (fifteenth century).