Sabugal

Sabugal rises on the right bank of the Côa River, on a plateau of the Beira borderlands that for centuries was a contested frontier between the kingdoms of León and Portugal. Granted city status in 2005 but with roots as a historic town dating back much earlier, it is now the southern gateway to the territory of Riba-Côa, the lands east of the Côa that were only definitively incorporated into the national territory late in history. The silhouette of its castle, crowned by an unusual five-sided tower, encapsulates the military and symbolic history of this place better than any document.

Riba-Côa and the Alcañices border

The settlement grew around a defensive outpost built in the early 13th century under the crown of León, which established a municipal council here. The decisive turning point came with King Dinis: after conquering the lands of Riba-Côa, the king granted Sabugal its charter in 1296 and secured its possession through the Treaty of Alcañices in 1297. This agreement between Portugal and León fixed the border along the Côa and definitively incorporated towns like Sabugal, Sortelha, Vilar Maior, Alfaiates, and Castelo Mendo into the kingdom. The line drawn then largely remains the Portuguese-Spanish border we know today.

The pentagonal design of the tower is no builder’s whim: each of its five sides echoes the quinas (shields) of the royal coat of arms, making the castle itself an emblem of Portuguese sovereignty over Riba-Côa.

The castle of the Five Quinas

To secure the new border, King Dinis reinforced Sabugal’s castle with an imposing pentagonal keep—unique among Portuguese medieval fortifications, earning the monument its popular name, the castle of the Five Quinas. The Gothic interior of the tower spans three vaulted floors, with keystones adorned with shields bearing the national quinas. Around this core, the walls and gates protecting the town developed, integrating Sabugal into the dense network of castles guarding the Beira borderlands.

Heritage and territory

Sabugal is the heart of a vast municipality that includes some of the most notable historic villages of the borderlands, scattered across the plateau between the Serra da Malcata and the Côa valley. The Sabugal Museum, located near the historic center, interprets the long occupation of the territory, from prehistoric and Roman remains to frontier life. Upstream and downstream, the Côa River connects this landscape to the remarkable collection of Paleolithic engravings of the Côa Valley rock art, while the nearby Sé da Guarda, in the district capital, recalls the ecclesiastical and strategic importance of the entire Beira Transmontana region. Pastoralism, granite, and medieval defensive lines form the enduring identity of this border town.