The reconquest of Sariñena by Pedro I Historical milestone · Sariñena, Los Monegros, Huesca Image of Sariñena, not of the place itself. The troops of Pedro I of Aragon took the Muslim stronghold of Sariñena in 1100, as part of the Christian advance across the Alcanadre plain prior to the conquest of Huesca and Zaragoza. The villa was incorporated into the royal patrimony and repopulated with people from the north. 1100 Photo: agracier - NO VIEWS (CC BY-SA 3.0) What to see and do in Sariñena