Lindisfarne Castle is a much more recent structure, built on an outcrop of rock known as Beblowe Crag, 1570-2. The Tudor fort was built to safeguard a harbour that sheltered English ships at war with Scotland. The accession of James VI of Scotland to the English throne in 1603 united the two kingdoms and Lindisfarne Castle lost its importance as a border fort. However a garrison remained at the castle until the late 19th century.