Palace of los Casalduch Monument · Sierra Engarcerán, La Plana Alta, Castellón The Palace of the Casalduch, in the centre of Sierra Engarcerán, very close to the parish church, dates from the 14th century and follows the patterns of Valencian civil Gothic. It was built by the baron of Puebla Tornesa on the site's old Muslim settlement, and later passed to the Casalduch family, who in 1512 obtained the municipality's founding charter and gave the town its name. Its sober façade has a semicircular-arched door and, above it, the heraldic coat of arms of the Casalduch, barons of Sierra Engarcerán since the 16th century; inside, three pointed arches with wooden coffered ceilings are preserved, one of them original and dating from the 16th century. Since 2007 it has housed the town hall and the museum collection dedicated to Bishop Beltrán, a native of the town. Photo: Juan Emilio Prades Bel (CC BY-SA 4.0) What to see and do in Sierra Engarcerán