Three historic nations within Spain maintain vigorous cultural separation:
Western Pyrenees. Unique language isolate (Euskara). Strong autonomy movement; some seek independence. Distinct cuisine, sports (pelota), festivals.
Northeast (Barcelona). Own language (Català), institutions, civil law traditions. 2017 independence referendum; ongoing political tension.
Northwest. Language (Galego) close to Portuguese. Celtic heritage, maritime culture. Autonomy statute; cultural revival strong.
All three have Statutes of Autonomy, own parliaments, and education systems. Their distinctiveness is constitutionally recognized but politically contested.