Church built in the second half of the XVI century by mandate of the bishop Don Juan de San Millán. Inside we can see great works of art, such as the sculpture of the Virgin of the Rosary, the work of Juan de Juni, the figure of the founding bishop, made by Esteban Jordán, the image of San Francisco Javier, probably a disciple ofGregorio Hernández and an organ of 1749 from theMonastery of Santa María de Sandoval, in the municipality of Mansilla Mayor, Cistercian style of the twelfth century and would be moved in 1861.
