It has a lighthouse on it, which was built in 1857 at the cost of £21,000. Robert Louis Stevenson's family were lighthouse builders, and his signature can be seen in its guestbook. The keepers lived on nearby Grunay.
The island was bombed twice in WWII by the Germans, who thought it was a munitions factory.
An aerial view of Grunay with Bound Skerry in background