Fanad Head Lighthouse — Teach Solais Fhánada — stands at the northern tip of the Fanad Peninsula in County Donegal, guarding the entrance to Lough Swilly. It has been a working lighthouse since 17 March 1817, when it first lit its lamp on St Patrick's Day. The lighthouse was built in direct response to one of the most devastating maritime disasters in Donegal's history: the wreck of HMS Saldanha on 4 December 1811, when the Royal Navy frigate struck rocks near Fanad Head during a violent storm. More than 250 people were lost. The only reported survivor was the ship's parrot. Following the disaster, calls grew for a lighthouse to mark the entrance to Lough Swilly, and construction began in 1815.

The lighthouse was designed by George Halpin, one of the most influential lighthouse engineers in Irish history. The original tower was later replaced by a taller structure in 1886 — essentially the lighthouse we recognise today — because mariners needed a more visible light from the Atlantic side. The tower stands approximately 22 metres high from its foundation, with the light sitting around 39 metres above sea level. The highlight of the visitor experience is climbing the tower's 76 steps: 59 spiral granite steps followed by 17 ladder-style steps near the top. The views over Lough Swilly, north Donegal and the Atlantic are enormous. Tower access is by guided tour, with local guides covering the lives of lighthouse keepers, the shipwrecks of Lough Swilly, and what life was like for families stationed on this remote headland.

Fanad Lighthouse is far more than a tower climb. The site includes an immersive virtual-reality experience called The Storm, The Sea, The Saldanha, which recreates the 1811 wreck that led to the lighthouse being built. There's also Éist, an audio experience encouraging visitors to slow down and listen to stories and sounds from generations of lighthouse life in this Irish-speaking part of Donegal. The AMHARC wildlife area focuses on the marine life around the headland — dolphins, seals, porpoises, and occasionally whales or basking sharks. Discover Ireland specifically describes Fanad as a popular dolphin-watching location. Bring binoculars. The exhibition spaces in the former helipad hut contain historic photographs, artefacts, and maritime displays. And the lighthouse's helipad, constructed in 1969 to support relief services for island lighthouses including Tory and Inishtrahull, is an unusual reminder of how lighthouse operations once required a whole network of people, boats and aircraft.

One of the most compelling aspects of Fanad is the accommodation. Three former lightkeepers' cottages — Inishtrahull View, Dunree View and Tory View — have been restored as self-catering accommodation available throughout the year. Staying overnight means experiencing the lighthouse after the visitors leave: darkness falls, the beam begins sweeping across the headland, and you have the whole Atlantic headland to yourself. This is genuinely bucket-list accommodation. Fanad is also part of the Donegal Gaeltacht, and the lighthouse operates bilingually — staff can provide services through Irish, and tours support Irish-language interpretation alongside several international languages. Very close to the lighthouse is the Lighthouse Tavern, described by Discover Ireland as the most northerly pub on the Fanad Peninsula, serving homemade bread, chowder, fresh fish and local craft beer.

Fanad Head Lighthouse sits naturally at the end of a spectacular Fanad Peninsula day. The recommended approach is via the Knockalla Coast Road from the south — stop at the viewpoint above Ballymastocker Beach, continue down towards Portsalon, then drive north to Fanad Head. Discover Ireland specifically recommends this approach. The Mulroy Drive, a scenic 35km route linking Fanad, Ballymastocker Bay and the Rosguill Peninsula, also begins at Fanad Lighthouse before continuing around Mulroy Bay towards other north Donegal attractions. Allow 1½–2 hours at the lighthouse itself. And one important note for families: children must be at least 1.2 metres tall to climb the tower. That's based on height, not age — worth knowing before booking.