[2] Its foundation is due to the king Alfonso VII of León and Castile, in fulfilment of a promise he made in the siege of Coria.

For this project, the king brought in 1142, from the abbey of Berdoues in Gascony (France), a community of Cistercian monks, with their abbot Rodulfo, who stayed in a very poor building built in a place called Cántabos, located in the municipality of Fuentelmonge.

He was named bishop of Sigüenza but resigned and returned to the monastery, where he did great works and transformations until converting the primitive building into another one of greater dimensions and of true Cistercian features, which still persists.

One of the great patrons of this monastery was the archbishop of Toledo, Rodrigo Ximénez de Rada, nephew of Martin of Hinojosa.

In 1215, Martín Muñoz, mayordomo mayor of Henry I, nephew of the abbot Martin of Hinojosa, paid for the works of the refectory.

Enrique de Aguilera y Gamboa, marquis of Cerralbo, made an exhaustive study of the entire monument, taking charge of making known the history and inventory of the works of art.

All the main buildings of the monastery (church, cloister, orchard, bread factory (silo), warehouses, workshops, etc.)

In 1771 the door was enlarged with an upper body that presents another pediment adorned with the vase of lilies, symbol of purity always related to the Virgin Mary.

The door gives access to an atrium or square where the Casa Curato is located on the left, originally an abbatial room, general goal and stewards offices.

It is a large chamber with sexpartite vaults and with beautiful pointed arched windows that provide a lot of light to the room.

This refectory communicates with a monumental kitchen that has in the center an immense square oven, supported by four pointed arches, an interesting example of Spanish type.

From the left nave of the church is accessed, through a door that was opened in the 12th century, the cloister called de Los Caballeros; It took this name because it was the burial place of families of the nobility and illustrious people.