Hermitage of Illueca Monument · Illueca, Aranda, Zaragoza Hermitage in the municipal district of Illueca, a town where the Luna lineage governed the barony from the 14th to the 17th century and built the Mudéjar castle-palace, declared a Monumento Nacional in 1931. Photo: Willtron (Wikimedia Commons) (CC BY-SA 3.0) What to see and do in Illueca