Built between the 17th and 18th centuries, it is in the Baroque style. It has a basilica-shaped nave with a very large main chapel that is covered with a barrel vault of granite stonework, built under the direction of master stonemason Josphe de Bar. Two adjoining chapels enrich the interior liturgical space, which is adds a high wooden choir located at the foot of the nave. The triumphal arch is semicircular and has no decoration. The main altarpiece is baroque in style. A large niche houses the image of Santa Baia carrying the palm of martyrdom. The influence of the architect Simón Rodríguez is very evident in this altarpiece, especially in the use of plaques, C-shaped scrolls, fruits, etc.