Spain, officially the Kingdom of Spain (Spanish: Reino de España), is a sovereign state and a state of the European Union located in southwestern Europe on the Iberian Peninsula. Its mainland is bordered to the south and east by the Mediterranean Sea except for a small land boundary with the British Overseas Territory of Gibraltar; to the north and north east by France, Andorra, and the Bay of Biscay; and to the northwest and west by the Atlantic Ocean and Portugal.