At a glance
The Island of 20,000 Saints — a National Nature Reserve at the tip of the Llŷn Peninsula with one of Britain's great bird observatories, a resident grey seal colony and 1,500 years of pilgrimage history. Day boat from Aberdaron (~£40); weekly self-catering cottages via the Bardsey Island Trust.
About Bardsey Island — Ynys Enlli
Bardsey Island — Ynys Enlli ("Island in the Currents") in Welsh — lies 2 miles off the tip of the Llŷn Peninsula, separated from the mainland by Bardsey Sound, a tidal race that historically made the crossing hazardous enough to give the island its aura of separation from the world. It is a National Nature Reserve, a place of Christian pilgrimage, and the site of one of Britain's most important bird observatories.
The island's Christian history begins with a 6th-century Celtic monastery, traditionally associated with the hermit Cadfan. Three pilgrimages to Bardsey were held equivalent to one pilgrimage to Rome — the island's remoteness and its status as the burial place of 20,000 saints (a number representing centuries of monastic dead) made it one of the most powerful pilgrimage destinations in medieval Britain. The ruins of the 13th-century Augustinian abbey of St Mary still stand near the southern shore.
Bardsey Bird and Field Observatory, established in 1953, occupies a converted farmhouse at the north end of the island and has maintained continuous ornithological records for over 70 years. The island's position at the extreme tip of the Llŷn Peninsula concentrates migrating birds in spring and autumn to extraordinary numbers — in good conditions, the island can be overrun with warblers, flycatchers and other passage migrants. Manx shearwaters breed in the island's cliff burrows in numbers that make it one of the largest colonies in Britain.
What to see on Bardsey Island
- The bird observatory — One of Britain's great migration watchpoints — thousands of migrants in spring and autumn; Manx shearwaters breeding in the cliff burrows.
- Grey seals — A resident colony of up to 100 grey seals on the rocky northern and western shores — visible from the coast path and the boat approach.
- St Mary's Abbey ruins — The 13th-century Augustinian tower near the southern shore — the surviving core of a monastic community that lasted nearly 1,000 years.
- Bardsey Sound — The tidal race between island and mainland — good for harbour porpoise and occasional dolphins on the boat crossing.
- Soay sheep and Bardsey ponies — Hardy primitive breeds that graze the island's interior — part of the island's character and conservation grazing management.
Find it on the map
Frequently asked questions
Bardsey Island is said to be the burial place of 20,000 Christian saints — a tradition that made it one of the great pilgrimage destinations of medieval Christianity. Three pilgrimages to Bardsey were held to equal one to Rome. The island was the site of a Celtic monastery from the 6th century, and the ruins of the 13th-century Augustinian abbey of St Mary still stand near the southern shore. The Bardsey Island Trust continues to operate the island as a place of spiritual retreat.
Bardsey is reached by boat from Aberdaron at the tip of the Llŷn Peninsula. The main operator is Bardsey Boat Trips — book in advance as places are limited and crossings are weather-dependent. The crossing takes approximately 20–30 minutes but involves the tidal race of Bardsey Sound, which can be rough. Day trips are available in season (April to October); alternatively the Bardsey Island Trust manages a small number of self-catering cottages for weekly stays.
Bardsey Bird and Field Observatory, established in 1953, is one of Britain's most important bird observatories. The island's position at the tip of a peninsula makes it a classic migration bottleneck — thousands of migrants concentrate here in spring (April–May) and autumn (August–October). Breeding birds include Manx shearwaters (one of the largest colonies in Britain), razorbills, guillemots, fulmars and choughs. The observatory publishes daily sighting logs during the season.
Yes — a resident grey seal colony of up to 100 animals hauls out on the rocky shores of Bardsey, particularly the northern and western coasts. Seals are present year-round but pup in autumn (September–November). They are easily seen from the boat on approach and from the coastal path on the island. Bardsey Sound is also good for harbour porpoise and, occasionally, bottlenose dolphins.
Yes — the Bardsey Island Trust manages several self-catering cottages and the farmhouse on the island for weekly stays (Saturday to Saturday). Accommodation is in high demand and should be booked well in advance, often many months ahead for summer weeks. Staying a week rather than taking a day trip gives a completely different experience of the island — resident wildlife includes short-eared owls, choughs, seals and Soay sheep.
Yes — Bardsey Island (Ynys Enlli in Welsh) is part of Wales, administered by Gwynedd Council. The island is approximately 2 miles off the tip of the Llŷn Peninsula at the southwestern extremity of North Wales. It is a National Nature Reserve and a Site of Special Scientific Interest. The small community on the island is Welsh-speaking, and Welsh is the primary language of the island's Trust and observatory.