Built on a hill overlooking the river, human occupation of this area dates back to the Iron Age. It allowed control of the river port that connected it to the sea and protected the population from enemy attacks. A vast walled area, two towers reinforce its defenses. From its walls, one can see the plain and the series of hills leading to Monte Clérigo beach.

A medieval castle, it has undergone several restorations over the centuries. All that remains of the original castle are the battlemented walls flanked by thick masonry turrets, the keep with twin windows, and the Alcaide-Mor Palace. On the ceiling of the fortress's armory, you can see interesting paintings of armor, war trophies, and the royal shield of King João V. Visigothic architectural elements are visible on the walls.

An important example of military architecture, this castle was built in the 13th century. It has the shape of an irregular octagon, and the keep, with rooms covered by Gothic vaults, is made of marble. Currently, the Palace of the Mayors and the Dukes of Braganza, and the Manueline-Mudejar chapel, remain. The residential buildings, barracks, and military warehouses in the Plaza de Armas are in ruins.

Classified as a Property of Public Interest in 1977, Ranhados Castle sits on a hill overlooking the village of the same name, approximately 838 meters above sea level. Archaeological evidence attests to the existence of a protohistoric fortified settlement, later Romanized. Its construction dates back to the reign of King Dinis, when he granted the town a charter (1286) to encourage its settlement and defense. At the end of the 14th century, these lands were donated to two Távora brothers, and some authors argue that it was built during this period, given the simplicity of the design and the apparent …

The medieval castle of Longroiva is one of the most important examples of Templar military architecture in Beira Interior and one of the best examples of a Romanesque castle in the region. Built on a supposed pre-Roman hillfort, built between the 4th and 2nd centuries BC, its construction coincided with a significant surge in settlement in the region in the early 12th century, having belonged to the Order of the Temple and the Order of Christ. In the 18th century, with the settlement's progressive decline in importance, the castle's progressive ruin was documented. In the 19th century, the castle began …

Classified as a National Monument in 1978, the castle that dominates the Historic Village of Marialva from atop a cliff likely dates back to the 12th or early 13th century, when King Sancho I promoted the settlement of the region. In 1286, King Dinis established one of the many fairs held during his reign there, so the oval shape of the walls surrounding the village, characteristic of the Gothic city perimeter of fortified towns in the Late Middle Ages, likely dates from this period. Although quite ruined, they maintain their original layout, and the three original gates can still be …

Only a few remains of this castle remain. From the original castle, the Santo Antônio Gate is visible, consisting of two thick walls, over which sits an arch with a broken outline on the outside and a perfect arch on the inside. Above the gate are traces of the original battlement, now transformed into a terraced house. Small sections of the wall also remain.

The castle sits atop a steep hill at the western edge of the Ossa mountain range. The original fortification still includes the wall and gates from the reign of King Dinis. Within the walls, the highlight is the Paço de Homnagem (Homage Palace), which, along with the keep, forms a vast, regular quadrilateral. The palace's design is inspired by Italian Renaissance palaces.

Within this magnificent monument, the extensive walls, the quadrangular turrets, the keep, and what remains of the barbicans are preserved, bearing witness to its defensive value. Rebuilt during the reign of King Manuel I, the armillary sphere, a Manueline-style window opening in the coastal wall, and the royal coat of arms are visible. Inside the walls, vestiges of the Chapel of Saint Michael and a Romanesque colonnade remain.

This castle possessed one of the best defensive border walls. Currently, only a few gates, sections of the wall, and towers crowning the hilltop remain. Several anthropomorphic tombs are also preserved near the east gate. Its layout had an irregular configuration, almost without battlements, and with three gates (the West Gate, the Arch Gate, and St. Peter's Gate), a keep, and four more towers.