Galicia is an autonomous community and historical nationality in modern-day northwestern Spain on the Iberian Peninsula, which was a major part of the Roman province known as Gallaecia prior to 409. It consists of the provinces of A Coruña, Lugo, Ourense and Pontevedra. It is bounded on the north by the Cantabrian Sea, to the south by Portugal, to the west by the Atlantic Ocean and to the east by principality of Asturias and the community of Castile and León. The archipelago of the Cíes Islands, the Ons archipelago, the Sálvora archipelago and other island such as Cortegada, Arousa, the Sisargas Islands and the Malveiras Islands are also part of Galicia.