🌐EnglishEnglishDeutschEspañolFrançaisNederlands日本語EntityQ2943850· pop 6· linked from 12 articlesBilbao's Iron RingSpanish Civil War fortificationsConnectionsSpainCountrySpanishEntityWorld War ICategories1936 establishments in the Basque Country (autonomous community)1936 in military historyBuildings and structures in BilbaoFortifications of the Spanish Civil WarMilitary history of the Basque Country (autonomous community)