Ireland’s lighthouses are vital to the nation’s survival. As an island nation, almost everything we consume from food, to electronics, fuel and vehicles arrive by sea. Lighthouses aid the safe passage of ships around our dangerous coastal waters. The story begins at Hook Head, a treacherous peninsula known locally as “The graveyard of a thousand ships”. Hook Head is home to a 800-year-old lighthouse: the oldest working lighthouse in the world.

In the second episode, we discover how Ireland became a world leader in lighthouse engineering. Often working in hostile and treacherous natural locations, Ireland’s lighthouse engineers and builders used great ingenuity to achieve what seemed impossible.

In the third episode, we discover the surprising roles that lighthouse keepers played in both World Wars. As the First World War raged around Ireland’s coast, our lighthouse keepers acted as unofficial coastguards, keeping detailed logs of their observations. In the Second World War an Irish lighthouse keeper played a decisive role in the outcome. We travel to Blacksod Bay, Co. Mayo where in 1944 lighthouse keeper Ted Sweeney took a weather reading which was to determine the entire timing of the allied invasion on D Day.

In the last episode of the series, former lighthouse keeper Richard Foran makes a poignant return trip to the Skelligs lighthouse which was his final posting before the lighthouse was automated. Having worked for Irish Lights for fifty-two years in total, Richard reflects on his time at the Skelligs. Automation was truly the end of an era for lighthouse keepers – keepers were no longer required and centuries of tradition ended.

More stories about the lighthouses around the nation, beginning with James Morrissey exploring the history of the one at Fastnet off the coast of Co Cork.

A look at Kish Bank lighthouse, which marks a shallow and dangerous sandbank off the coast of Dublin and was an astounding feat of 20th-century engineering

A look at the constantly evolving lighthouse technology featuring Cromwell Point lighthouse, Valentia Island, Kerry.

Ever since they appeared on the Irish coast, lighthouses have been a source of fascination and inspiration for photographers and painters. Photographer Peter Cox shares some of his spectacular lighthouse photographs and explains his fascination with lighthouses, including the Skelligs lighthouse.