Festivities of Uncastillo Activity · Uncastillo, Cinco Villas, Zaragoza Image of Uncastillo, not of the place itself. Uncastillo celebrates its patronal festivities on 8 September; the municipality also preserves the Fiesta de los 50 Caballeros in July and the Fiestas de Los Bañales on the last Sunday of May, linked to its Roman archaeological site. Photo: France64160 (CC BY-SA 3.0) What to see and do in Uncastillo