The Saint John the Evangelist Church was founded in 1485. You enter by a Gothic porch of the fifteenth century along with a tombstone-shaped canopy, with the inscription of its foundation and with the coat of arms of its founder, D. Rodrigo de Melo, 1st Earl of Olivenza.

The nave has Gothic ribs and is covered with abeautiful and excepcional collection of tiles, by the painter Antonio de Oliveira, dated 1711 and signed by the author.

On the floor of the church can see the tombs of the Dukes of Cadaval and their ancestors. At the center of the church you can admire two of the many curiosities of this church, a crypt with the bones of the monks of the convent of Lóios and an Arabic cistern - the church was built on the ruins of an Arab castle, destroyed during the riots in favor of the Master Avis in 1384.

The wall of nave has a tribune of the seventeenth century, beautiful example of architecture of this century, built by the 1st Duke of Cadaval, Dom Nuno Alvares Pereira de Melo.

The spectacular main altar is in the Mannerist style, transition from the Renaissance to the Baroque. The images represent St. John the Evangelist. The walls are covered with polychrome tiles of the seventeenth century.

The Chapel of the Blessed Sacrament has a golden altar of the eighteenth century with a renaissance of the sixteenth century tomb, belonging to Don Francisco de Melo, adviser to John III. The construction of this tomb is attributed to the French architect Nicholas Chanterene. On the other wall of this chapel is the tomb of Manuel de Melo, Governor of Tanger.