Donegal

Donegal · Ireland

Donegal

The northernmost county of Ireland: the town of Donegal with the O'Donnell castle, the Slieve League cliffs above the Atlantic and Glenveagh National Park, with the castle on the lakeshore.

Ulster

In the photo: Slieve League, Donegal

Illustrative images. The pictures in this guide are illustrations based on the real place, not photographs, and may differ from it.

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Get to know the place

A region to enjoy
at your own pace.

Donegal is the county at the far northwest of Ireland, in the historic province of Ulster, but part of the Republic. It is almost entirely bordered by the Atlantic and by the border with Northern Ireland, and is one of the largest and least populated counties in the country. The landscape is made up of granite and quartzite mountains, peat bogs, lakes, high cliffs and long beaches, along the northern stretch of the Wild Atlantic Way. Much of the county is Gaeltacht, where Irish is spoken.

The town of Donegal sits at the head of Donegal Bay, at the mouth of the River Eske. It was the seat of the O'Donnells, chiefs of the clan that dominated the region until the early 17th century, and it preserves their 15th-century castle, with a 17th-century house added by the English, and the ruins of a Franciscan convent on the estuary. The centre revolves around the triangular square called The Diamond.

West of the town, on the Teelin peninsula, lie the Slieve League cliffs, Sliabh Liag in Irish, which drop about 600 metres to the sea and are among the highest in Europe. From the Bunglass viewpoint you can see the cliff face in rust, green and grey colours above the Atlantic. In the northern interior of the county, Glenveagh National Park occupies a mountain valley with a long lake, woodlands and a 19th‑century castle with gardens.

Belfast and the Calçada dos Gigantes are on the other side of the border, in Northern Ireland, about two hours by car. The weather changes quickly and the wind is strong in any season.

This destination brings together 1 city: Donegal.

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One destination, many paths

The cities on this trip

Start with one city or combine several in your itinerary.

Where Donegal is
Donegal

Contornos: © Tailte Éireann, National Statutory Boundaries 2026, CC BY 4.0. Adaptação do Cidade Turismo.

How to get there: Donegal

✈ Aeroporto de Donegal (Donegal Airport) (CFN), in Carrickfinn · 75 km to Donegal

✈ Aeroporto de Ireland West (Ireland West Airport Knock) (NOC), in Knock · 150 km to Donegal

Check before you buy. Donegal Airport (CFN), in Carrickfinn, receives flights from Dublin; Ireland West (in Knock) and Dublin airports are farther away. There is no train in the county: buses link Donegal to Sligo, Galway and Dublin. Attractions are spread out and require a car or a tour.

The local experience

Things to do in Donegal

Donegal Castle
Donegal · Donegal · Castle

Donegal Castle

15th-century tower of the O'Donnells, chiefs of Tír Chonaill, on the banks of the River Eske; enlarged in the 17th century with a Jacobean house by the Englishman Basil Brooke, restored and furnished.

Donegal Abbey
Donegal · Donegal · Monastery

Donegal Abbey

Ruins of the Franciscan friary founded in 1474 by the O'Donnells on the edge of the Eske estuary, associated with the friars who wrote the Annals of the Four Masters in the 17th century.

Slieve League
Donegal · Donegal · Viewpoint

Slieve League

Cliffs on the Teelin peninsula that drop about 600 metres to the Atlantic, among the highest in Europe, seen from the Bunglass lookout, with high-level trails and a visitor centre.

Glenveagh National Park
Donegal · Donegal · Park

Glenveagh National Park

National park of about 16,000 hectares in the Derryveagh Mountains, with Lough Veagh, woodlands, bogs, reintroduced golden eagles and an 1873 castle with lakeside gardens.

Before you go

Practical information

A little planning leaves more time to enjoy the journey.

When to go

From May to September the days are long, with daylight until after 10 p.m. in June, and Glenveagh Castle and the visitor centres operate full hours. July and August are the busiest. April and October are usually quieter. In winter the days are short and wind and rain are strong. Rain can fall at any time of year.

The seasons shown are the most usual ones; nature doesn't always follow the calendar.

How many days to stay

Two days allow one for the town of Donegal and Slieve League and another for Glenveagh. With three or four days, explore the coast of Glencolmcille, the northern beaches and the Inishowen peninsula.

Which city to stay in

The town of Donegal, around the Diamond, has hotels, guesthouses and pubs and is the base for Slieve League. Carrick and Kilcar, near the cliffs, have guest houses. For Glenveagh, Letterkenny, the county's largest town, 25 km from the park, and the villages of Dunfanaghy and Gweedore in the north are the most common bases.

Respect the place

Take your trash with you, follow the signs and support local businesses. In natural areas, follow the visiting guidelines.

Get your questions answered

Frequently asked questions about Donegal

Is Donegal part of Northern Ireland?

No. Donegal is a county of the Republic of Ireland, although it lies in the historic province of Ulster and borders Northern Ireland.

Do I need a car?

Yes — it’s the most practical option. Slieve League and Glenveagh are far from the town of Donegal and public transport is sparse. In Ireland you drive on the left, and the coastal roads are narrow.

How many days to stay?

Two days for the town, Slieve League and Glenveagh; three or four to include the coast and the northern part of the county.

Can you go to the Calçada dos Gigantes from Donegal?

The Calçada dos Gigantes is on the other side of the border, in Northern Ireland, about a two-hour drive from north Donegal.

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