Castell i muralles de Cullera represents significant Muslim military architecture from the 10th century Caliphate period, situated on Serra de les Raboses approximately 200 meters above the town, commanding panoramic views of the Mediterranean coast and the Júcar River mouth. Originally part of the Taifa of Valencia's defenses during the 11th century, the complex was fully developed by the 14th century with a fortified enclosure called the albacar vell containing the main castle with flanking towers and a 10-meter central tower. The strategic position controlled coastal trade routes and the fertile La Ribera Baixa agricultural plain. Since 1997, the castle has housed the Municipal Museum of History and Archaeology of Cullera, preserving the region's rich medieval heritage and Islamic architectural traditions.