Tory Island Lighthouse stands at the western end of the island, built from 1828 and first lit in 1832. It was automated in 1990 and remains a working aid to navigation, with a white band around the tower and long Atlantic views in every direction.
The lighthouse is not usually the island's headline sight, but the walk out helps you understand Tory's scale: narrow, exposed, inhabited, and surrounded by water that decides the timetable.