Some remains show the occupation of this site in Luso-Roman times. Remains of the fortress remain today, framed by four corner towers, a Suevo-Visigothic door and a Mozarabic window.

The Château de Fraião constituted a significant example of Romanesque fortress, but not adapted in the Gothic era. Thus, when from the beginning of the 13th century all the regional strategic interest shifted to the line of the river Minho-especially to Valença and Monsoon-was sidelined. Currently, only remains of the Castle a granitic suite, which provides magnificent views of the Minho Valley.

Small section of a masonry defensive wall that stands back to back to modern buildings.

It is believed that this castle was built prior to nationality, during the reign of Alfonso IX of León. Later, the King Dom Dinis regained much of that region, ordering works of restoration and expansion in their strongholds. Dom Manuel I gave new Charter to village, taking place new restoration. Currently, there are two square towers, one of the entrance doors bears the Royal Crown and coat of Dom Manuel. The wall that surrounded the village has nothing left.

Castle located on top of a rocky cliff, enjoying a privileged position as a viewpoint, the exact date of its construction is unknown, but it is assumed that it was built by Mendo Rufino, during the reign of King Afonso Henriques or during the reign of King Sancho I. From the castle, currently in a precarious state of conservation, remain some turrets, a small courtyard and the Keep, inside which three records of occupation are visible, the first two of use for housing and the last of defense. It belonged to the group of castles that formed the defense line …

Located on a rocky Islet in the river Tagus, a Templar Castle warrant lift by Gualdim Pais, in the 12th century. Previously, it is believed to have existed a castro lusitano, improved by the Romans. The walls are flanked by ten towers that surround the keep and which gave the set an important defensive capabilities. Inside, there are several monumental doors that make communication between the different parts of the Castle. The access is made by river in a small boat crossing, lasting about five minutes.

Fortification with probable origins of the Castro culture, rebuilt in the medieval period, around the 12th century. Are still visible the ruins of the ancient wall around the village, which they realize its oval plant.

The castle is only a small part of the wall, knowing, however, that this castle was built on land offered to the Crusaders who helped conquer the region from the Moors.

It is a fortified manor house from the 15th century, rare in Portugal. The dependencies are organized around a central courtyard, with characteristics of military and residential architecture. The keep and some wall sections stand out. At the base, there is a cushioned ashlar from the Roman period. Above the portal of the castle-citadel are the coat of arms of the marquises of Alvito.

Romanesque-Gothic Castle built in the early 14th century, formed by two fortified sets. The fence is square and is defended by a turret and with two entries, the Santarém port and the port of the village. The Palace of the mayors, in conjunction with the wall of the fence on the northern façade was redesigned in 1480. The clock tower has moth manuelina. In the middle of the walled enclosure is the ancient parish church, a 16th century building quite damaged.