Romanesque church that belonged to an already extinct monastery and it was donated in 1124 by the King Alfonso VII to Munio Pérez. The latter also donated it to a group of nuns that were part of the see of Santiago. The nave was rebuilt, but we must highlight a beautiful pentagonal apse connected to the nave by a rectangular body limited by the triumphal arch and another parallel arch that marks the start of the semi-circular portion. It has a barrel vault covering the straight section of the main chapel and another one covering the frontal part of the apse over ribs supported by pillars. On the outside, the apse is divided in five sections by semi-pillars attached to the vertices of the angles and connected to a portion of the buttresses. It has five windows with toric archivolts and a fine chequered design, with the decorative motifs of the tympanums standing out. It is located in the place where the monastery was before.