The church of Santa María dates from the 15th century. It is a church with a hall composed of three naves of the same height, except for the first section of the side naves, which is a little lower than the rest. It has an polygon-shaped apse. It has two accesses, the side entrance with decoration characteristic of the era and known as "Reyes Católicos" (Catholic Monarchs) in which Renaissance and flowery gothic styles are mixed. The other access is at the foot, next to the tower, and is classicist in style.
The main entrance and the apse are the oldest parts of the current building, being mediaeval. The rest is from the Renaissance period. This is a monument of great importance, rebuilt and extended at the start of the 16th century, on the site of a previous Romanesque temple founded by Don Diego López de Haro el Bueno (XII).