Castillo de Aitzorrotz Monument · Eskoriatza, Debagoiena / Alto Deba, Gipuzkoa Medieval fortress atop the mountain of the same name (736 m), with documented references from the 12th century onward; it was declared a monument by the Basque Government in 2012. 2012 Photo: Uranzu (CC BY-SA 4.0) What to see and do in Eskoriatza