Cantabria (, ; ) is a Spanish historical community and autonomous community with Santander as its capital city. It is bordered on the east by the Basque Autonomous Community (province of Biscay), on the south by Castile and León (provinces of León, Palencia and Burgos), on the west by the Principality of Asturias, and on the north by the Cantabrian Sea (Bay of Biscay).