Festivities of invierno de Alagón Activity · Alagón, Ribera Alta del Ebro, Zaragoza Image of Alagón, not of the place itself. Alagón's winter festival is held in a town that preserves a Baroque school built by the Jesuits in the 18th century, left empty after their expulsion in 1767, and which shares with Remolinos and Pedrola the Mudéjar legacy declared a World Heritage Site by Unesco. Photo: Vasyatka1 (CC BY-SA 4.0) What to see and do in Alagón