Castellciuró, Medieval castle in Molins de Rei, Spain
Castellciuró is a medieval fortress on a hilltop in Molins de Rei, located within Collserola Natural Park. The structure features a circular tower with arrow-slit openings and sits above the Llobregat River valley.
The fortress arose in the 10th century as part of a defensive system protecting the Llobregat valley during the Spanish March period. It played a role in the medieval network that monitored and controlled movement through the region.
The name Castellciuró comes from Catalan, referring to the fortified hilltop dwelling. Today it sits as a quiet landmark where visitors can observe the heavy stone walls and tower structure that speak to the medieval past of the region.
Access is through the Camí de Santa Creu d'Olorda path, which connects the fortress to the main areas of Molins de Rei. The route passes through the natural surroundings and offers views of the ruin and surrounding landscape.
The fortress walls contain sections of opus spicatum masonry from the 10th century, an early construction technique using diagonally laid bricks. These visible details show how early medieval craftsmen built in Catalonia.
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