Castillo de Luna, Medieval castle in Los Barrios de Luna, Spain.
Castillo de Luna is a fortress in Los Barrios de Luna with five preserved wall segments and a central residential area showing the remains of its foundations. The site sits atop Peña de Almanzor and contains traces of an underground heating system that once served the stronghold.
Alfonso II of Asturias built the castle in the 9th century to fortify the region. In the 15th century, Diego Fernández de Quiñones oversaw a major reconstruction that reinforced its military importance.
The castle earned recognition as a National Monument in 1933, receiving protection under Spanish historical heritage laws for its architectural significance.
Visiting requires a walk up to the hilltop where you can explore the medieval military structures. The location is best visited in dry conditions, and sturdy footwear is recommended for moving around the ruins.
The fortress once served as a secure vault for the Royal Treasure of the Astur-Leonese Kingdom. Its role as a high-security prison underscores its strategic importance as one of the region's most fortified strongholds.
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