Saint Helena is an island of volcanic origin and a British overseas territory in the South Atlantic Ocean. The territory consists of the island of Saint Helena, as well as the dependencies of Ascension Island and Tristan da Cunha. Saint Helena is famous for being the place of exile of Napoleon Bonaparte between 1815 and his death in 1821. Longwood House, where Napoleon stayed, and Sane Valley, where he was buried, are owned by the French government, since the British government gave them to the French in 1858. Saint Helena is a member of the International Island Games Association.