How do you get to Ireland's Eye?

Take the ferry from Howth Harbour. Crossing time is about 15 minutes. Ferries run seasonally (April–October), usually several times daily, and drop you on the island for a set period before the return trip. Book in advance on summer weekends. The ferry costs around €18 for adults.

Ireland's Eye guide: how to visit the island from Howth

An island within sight of Dublin

Ireland’s Eye sits 1.5 km off Howth Harbour, close enough to see clearly from the East Pier but sufficiently separated to feel genuinely remote when you arrive. The island is uninhabited and protected as a nature reserve, and it receives relatively few visitors compared to the crowds on the mainland at Howth — which gives it a quiet and slightly wild character that is unusual for anywhere so close to a major European capital.

The crossing takes 15 minutes by ferry and you can explore the island on foot in about two hours. For most visitors, Ireland’s Eye functions as a morning or afternoon addition to a Howth day trip, but it stands on its own terms: an uninhabited island with significant wildlife, early medieval ruins, Napoleonic fortifications, and the particular atmosphere of a small piece of land where no one lives.

What Ireland’s Eye is

The island is a knob of Cambrian quartzite — the same ancient rock that forms the Howth headland — separated from the mainland by a narrow channel that was once dry land before the sea rose after the last ice age. It is roughly 500 m at its longest dimension, with a flat central area, rocky cliffs on the western face, and a distinctive detached sea stack at the northern end called the Stack of Thulla.

The name “Ireland’s Eye” is an anglicisation of the Irish “Inis Mac Nessan” (Island of the Sons of Nessan), and later “Inis Eirinn” — Eye being an old Norse word for island, not the English “eye”. The island appears in Irish annals from the 8th century as a monastic site.

How to get there

The ferry from Howth

The ferry from Howth to Ireland’s Eye departs from the harbour steps at Howth Harbour, where a small ticket hut operates during season. The boat takes approximately 15 minutes to cross the channel. Services run from approximately April to October — the precise season varies by year, so check current operating dates before planning a visit.

The ferry operates on a timed return system: you board, cross, are landed on the island, and the boat returns to Howth, coming back to collect you at an arranged time (typically 1.5–2 hours later). This gives enough time to walk the island thoroughly and still have a quiet period sitting by the shore.

Summer weekends: advance booking is essential on July and August weekends. The ferry has limited capacity and popular time slots fill quickly. Midweek in May, June or September, walk-up is usually possible.

Weather: the crossing can be cancelled in strong winds or significant swell. Check the forecast before making plans. The channel between Howth and Ireland’s Eye can be surprisingly rough with a north or east wind.

Getting to Howth

The DART (Dublin Area Rapid Transit) runs from Dublin city centre to Howth in approximately 30 minutes, with trains every 15–20 minutes during the day. Board at Connolly, Tara Street, Pearse or any DART station on the city section. The fare is €3.60 each way with a Leap card. The DART arrives at Howth Harbour — the ferry steps are a 2-minute walk from the station. Full logistics in the Howth day trip guide.

What you will find on the island

The monastery and St Fintan’s Church

The most immediately visible historical feature on Ireland’s Eye is the ruined church in the eastern section of the island. The structure dates from the 8th–9th century and is associated with St Nessan, a disciple of St Columba who established the monastic community. The church’s Romanesque west doorway has survived with most of its stonework intact — a carved arch of modest but genuine quality, standing in isolation on an uninhabited island with the sea visible on three sides.

The building itself is a small, single-cell nave-and-chancel church of the type found across the western Irish coast. The burial ground around it was in use until relatively recently — some graves are post-medieval. The entire complex is unenclosed and free to access.

A small Martello tower stands at the northwest point of the island, one of the coastal defence towers built around Dublin Bay between 1804 and 1815 in anticipation of French invasion. The same era of towers appears at Sandycove south of Dublin city (the Joyce tower), on Dalkey Island, and at several points along the south Dublin coast. The Ireland’s Eye tower is not open to visitors but is in reasonable condition externally.

The gannet colony

The most remarkable natural feature of Ireland’s Eye is the northern sea stack, the Stack of Thulla, which supports a substantial colony of northern gannets. Gannets are large seabirds — wingspan up to 1.8 m, white with black wingtips and a distinctive golden-yellow head. They breed in cliff colonies and are spectacular fliers, dive-bombing fish from heights of 30–40 m at speeds up to 100 km/h.

The gannet colony on Ireland’s Eye is one of the more accessible to any European capital city. The colony is active from approximately March to September; peak numbers (chicks in nests, constant comings and goings) are visible from May through July. From the island shore facing the stack, you can watch the colony at reasonably close quarters. From the ferry itself, or from the Howth cliffs and Ireland’s Eye boat cruise that circles the stack, the sea-level view of the gannet ledges is more dramatic than the view from the island.

Other wildlife

Grey seals are regularly seen hauled out on the rocks around the western and southern shores of the island, particularly in calm conditions. Common seals and grey seals both use the area — the distinctive differences (grey seals have straight “Roman” noses; common seals have a rounded, puppy-like profile) are visible at close range. They tend to move into the water as visitors approach, but patient and quiet visitors can observe them at rest from a respectful distance.

Common terns, Arctic terns, razorbills, guillemots, shags and great black-backed gulls breed on various parts of the island. The tern colonies occupy the lower-lying rocky areas and are sensitive to disturbance during nesting (May–July) — keep well back during this period. In autumn, the island is a known watchpoint for migrating warblers, flycatchers and other small landbirds that make landfall on the Irish coast during the easterly winds of September and October.

The vegetation is typical of an exposed coastal island with thin soils and high grazing pressure historically: rough grass, sea campion, thrift, yellow rattle, bracken in the sheltered hollows, and patches of heather on the higher ground. In spring the thrift and sea campion are in flower, giving the margins of the island a pink-and-white coastal meadow character.

Rabbits are very numerous — there are no predators on the island and the population has expanded to a density that affects the vegetation in places.

Walking the island

The island has no formal paths or waymarking. The accessible area is roughly the central and eastern sections — the western cliffs are steep and should not be approached without care. A loose circuit of the accessible island takes about 45–60 minutes at a slow pace; the full exploration including time by the church ruins and observation time at the shore facing the gannet stack takes about 90 minutes.

The ground is uneven throughout: rough grass, rocky outcrops, and boggy sections in the central low ground after rain. Shoes you do not mind getting wet or muddy are appropriate. The island can be windy even on days when the mainland seems calm — bring a windproof layer.

There is no fresh water, no toilets, no café, no shade and no shelter beyond the ruins. Bring water, a snack, and protection from sun or wind as appropriate.

The boat view alternative

The Dublin Bay, Howth coast and Ireland’s Eye boat tour circles the island and the Howth cliffs without landing, which gives a different and in some ways more dramatic perspective — the gannet stack from sea level, the cliff caves, the scale of the headland that is not visible from shore. Running about 50 minutes, this is a good option if the weather makes landing conditions uncertain, or if you want the wildlife sighting without the time commitment of the full island visit.

Honest assessment

Ireland’s Eye is not a destination in the same way as Glendalough or the Cliffs of Moher. The ruins are small, the walk is short, and in poor visibility or bad weather the experience can feel limited. What it offers is something different from the standard Ireland day out: a genuine short passage to an uninhabited island with real wildlife interest, free of the infrastructure and crowds that accompany most Irish heritage sites. For visitors already in Howth, it is the most distinctive add-on available. For visitors who have to travel specifically for it, it is worth building into a Howth day rather than treating as a standalone destination.

Planning your visit

Ferry: approximately 15 minutes from Howth Harbour; advance booking recommended in summer; approximately €18 adults return.

Season: April–October for regular service; check specific operator each year.

Time on island: 1.5–2 hours.

What to bring: water, snack, windproof layer, camera with zoom for wildlife.

Footwear: trail shoes or light boots; the terrain is rough throughout.

Getting to Howth: DART from Dublin city centre, 30 minutes, €3.60 Leap card.

Ireland’s Eye slots naturally into a Dublin coastal 3-day itinerary as part of the Howth day. It is mentioned in the best day trips from Dublin guide as one of the more unusual options north of the city, and its ferry operator sits within the wider picture of Dublin Bay boat tours.