What remains of the castle, for the most part, dates back to the reconstruction carried out by Dom João I. At the top of the hill stands the superb keep that seems to be from the Dionysian foundation; of the royal palace there are occasional Gothic twin windows and pieces of arches from the galleries.

As in several villages in the Algarve, Loulé also accuses the presence of various peoples: Phoenicians, Carthaginians, Romans and Moors, who took over the city in 715. The Christian reconquest took place in 1249 and in 1268 the fortress was rebuilt and expanded, being rebuilt in the 16th century. Currently, there are some remains on Rua da Barbacã, Largo da Matriz and Rua Rainha Dona Leonor.

Melgaço Castle currently consists of an imposing keep - with three floors, a parapet protruding over corbels, crowned by pyramidal merlons and with a hipped tile roof - and the surrounding walled enclosure, in a good state of conservation. It is believed that it may have had 3 towers and two doors, according to Duarte de Armas in his “Livro das Fortalezas” (Book of Fortresses) from 1509. The current tower houses the Melgaço Keep Tower Museum.

The castle of Mogadouro was donated by D. Afonso Henriques to the Templars and, a few years later, passed to the Order of Christ, its successor. Today, only two sections of walls remain, an isolated tower with rectangular faces and some scarce remains of carved walls.

This castle, also known as Castle of San Antonio, located 825 m altitude and belongs, together with the Castle and St. Stephen, the defense of the Valley of keys. Was sent by Dom Dinis built in the 13th century, probably about traces of a Roman castro. In this walled enclosure that surrounded the village, there are still some traces. Of the four original towers remains only a donjon. Are also some remains of the ancient Citadel, where he opens a large lounge homeless, surrounded by granite walls.

Located on a limestone elevation, this castle has a keep dating from the time of Dom Dinis, which stands out for its volume. It was after the reconquest from the Moors that King Dinis had the castle completely remodeled, which had housed the Moors for 400 years. Later, King João I ordered the fortress to be expanded, but the War of Succession and the 1755 earthquake contributed to its state of ruin. On the southeast side there is an elbow-shaped entrance portal and a vaulted tunnel. Next to the castle there are ruins of the Convent of the Dominican Nuns …

The walls and towers remain from the 17th century fortifications to this day. The consistent medieval wall is made of marble and granite and is torn by several doors. It has a triangular plan with square towers. Inside the walls, the Casa da Guarda and the old Town Hall stand out. The military complex retains, despite being quite damaged, a unique and picturesque appearance.

Fortified village, where only the walls and, inside, remains of dwellings.

Built by King Dinis, there are currently traces and remains of the old castle, around two meters high. Being an important historical testimony, you can see the strong citadel and a walled enclosure.

The castle walls remain, two doors (of the village and the Santarém) and some towers. The old Palace is a monumental residential tower of the 15th century. Plant composed of rectangular main body and two turrets inserted on the wall of the village. The curtain wall that unites the turrets, crowned by way of round, is torn by arched door broken abroad, down inside. Without cover, are visible in the interior, where Corbels supporting the beams of the floors and ceilings. Still inside the enclosure, there is a large cistern. The Muslim Castle would have been conquered by the King …