This church dedicated to the Martyr Saint Sebastian was founded in 1576 by order of King Sebastian, as a votive offering for healing after the great plague of 1569. The 1755 earthquake considerably damaged the original church, so that the present building is the result of a reconstruction in the second half of the 18th century. The church’s façade has a simple design, which features a broken volute pediment. In its interior, one can see the chancel with its painted stucco reliefs in the vault and its Rococo retable, made of polychrome and gilt carved wood, surmounted by the town’s arms and housing the 18th century statue of the patron.