Corullón Castle, Medieval castle in Corullón, Spain.

Corullón Castle is a medieval fortress in the El Bierzo region with sturdy stone walls and defensive towers rising above the surrounding valley. The structure displays typical fortification features with gates and reinforced corners designed to withstand attack.

The castle was built in the 14th century by the Rodríguez de Valcarce family as a mansion and pleasure residence, on the site of a Roman castro and an earlier medieval tower. It passed to the Álvarez Osorio, Counts of Lemos, until 1482, then to the Álvarez de Toledo; it now belongs to descendants of the Marquises of Villafranca.

The castle is privately owned by descendants of the Marquises of Villafranca, so its interior is not open as a museum. Its name links it to the Corullón family line, and the site stands above the village on a former Roman castro. The Revueltas Irmandiñas, the uprisings that damaged the earlier tower, are the episode most often told about the castle locally.

The site is accessible through local roads in the El Bierzo region with parking available for visitors. Walking paths circulate around the structure, allowing good views of the fortification and surrounding landscape.

The castle was built as a mansion and leisure residence by the Rodríguez de Valcarce family in the 14th century, on top of a Roman castro and an earlier medieval tower, so its origin is residential rather than defensive.