# Castle of Monforte de Rio Livre

- **Country:** Portugal
- **Location Text:** (Águas Frias, Chaves)

The Castle of Monforte is a medieval military installation situated in the civil parish of Monforte, within the Portalegre District of Portugal's Alto Alentejo region. Originally established on the ruins of an ancient castro, the fortress was significantly expanded under the orders of King Denis, who commissioned a new circuit of walls reinforced by square towers and a prominent keep. Constructed primarily from granite, wood, cement, and tile, the structure reflects the strategic architectural needs of the Middle Ages. Although specific construction dates for the initial fortification are not explicitly detailed in the surviving records, its evolution is closely tied to the Reconquista, beginning with the site's conquest from the Moors by Afonso Henriques in 1139.

Historically, the castle served as a vital defensive point during centuries of conflict between Portuguese and Spanish forces. It received royal charters in 1257 and 1512, solidifying its administrative importance. The site witnessed significant turmoil during the 14th-century crisis and later played a crucial role in the Portuguese Restoration War between 1640 and 1668, when its walls were reinforced and four bastions were added under King John IV. The fortress changed hands multiple times, notably during a brief Spanish occupation in 1662 before being swiftly retaken by Portuguese troops. Over the centuries, it passed through various noble hands, including those of the Constable Nuno Álvares Pereira and eventually the House of Braganza.

Today, the Castle of Monforte stands as a property of the Portuguese Republic, representing a tangible link to the nation's turbulent border history. While the text does not specify its current operational status or public access details, the remaining vestiges highlight its enduring presence on the hilltop. The site encapsulates layers of history ranging from early Moorish conflicts to the dynastic struggles of the Braganza era. Its condition serves as a testament to the repeated repairs necessitated by wars, particularly those against Spain, preserving the memory of a key stronghold in the Alentejo landscape.

**Source:** https://en.wikipedia.org/wiki/Castelo_de_Monforte_(Chaves) (Wikipedia, CC BY-SA)