11th-13th  century. A three nave structure with a three apse head. There are porches in the south and west façades. There is a remarkable Gothic front in the latter. The building still has the remains of a Visigothic church from, approximately, the 6th century. The church served as a pantheon for the knights Fernán García and Díaz Sanz, founders of the Noble Lineages of Segovia, and of Don Diego de Colmenares, city chronicler. The ceramist Daniel Zuloaga bought this house in 1905 in order to set up his workshop here and live in it at the same time. Visitors can see the numerous works by the artist.