According to tradition, the cult of the Martyrs St Cosme and St Damian goes back to the time when the relics were being transferred from Toledo to Oviedo/Uviéu during the Muslim invasion.
The original Latin cross building, dating from the 18th century, was expanded in the 19th century with the addition of the porch surrounding three walls of the church and the square bell tower. The latter is divided into three floors, the bottom one being open and covered with a stone facing and the other two, separated by a line of imposts. The church is entered below the tower via a doorway with Baroque lugged architraves. The materials used in the building are masonry in the walls, wood in the porch and ashlar in the corners, bays, etc. The roof is gabled in the nave and hipped in the tower. Inside, the nave is covered with barrel vaulting with lunettes and groin vaulting in the apse. The entire vault is decorated with paintings.
In front of the shrine, the so-called House of the Novena is still preserved, containing a popular-style 18th-century alms box.
