Castillo de Samitier, Romanesque defensive castle in La Fueva, Spain.

Castillo de Samitier is a Romanesque fortress on the Tozal de Samitier, a limestone crest above the Cinca gorge at Entremón. Its pentagonal keep, reached by a removable stair, stands beside the church of San Emeterio and San Celedonio, whose three naves and three apses close off the only approach. A round watchtower stands 500 metres away.

The fortress was built in the second half of the 11th century during the military conflicts between Christian and Muslim forces in Aragon. It formed part of a broader strategy to control this strategically important mountain region.

The fortress served as a refuge and defensive anchor for the surrounding communities during times of conflict. Today, visitors can see how it shaped settlement patterns and defensive strategies across this mountainous region.

The route to the castle starts from Samitier village and follows a passable trail of about 2 kilometers. The walk is moderately steep with views of the surrounding mountains and the reservoir below.

The hexagonal tower was equipped with removable staircases that prevented intruders from easily entering. This practical defense measure shows how medieval defenders adapted their fortifications to specific threats.