Unique geological formation of 40,000 interlocking hexagonal basalt columns formed by volcanic activity 60 million years ago. Northern Ireland's only UNESCO World Heritage Site, steeped in myths about giants.
The Giant's Causeway on the north Antrim coast of Northern Ireland is a UNESCO World Heritage Site and one of the most remarkable natural geological formations in the British Isles. Approximately 40,000 interlocking basalt columns emerge from the cliffs and descend into the sea, formed around 60 million years ago when molten lava cooled and contracted, fracturing into the distinctive hexagonal shapes that give the site its otherworldly geometry. The tallest columns reach nearly 12 metres and cluster in formations named by successive generations of observers: the Giant's Boot, the Wishing Chair, and the Honeycomb are among the most photographed groupings. According to local legend, the causeway was built by the giant Fionn Mac Cumhaill to cross to Scotland, where the same basalt formation appears on Staffa island as Fingal's Cave. The visitor centre — designed by heneghan peng architects and awarded numerous architectural prizes — provides extensive geological and mythological interpretation and houses a gift shop, café, and ticketing facilities. Walking down to the stones from the visitor centre is free; the visitor centre and car parking carry an admission charge. Three main walking routes vary in length from 1.5 km to 8 km and follow clifftop and shoreline paths with dramatic views. The Shepherd's Steps provide a steep shortcut between the clifftop path and the causeway level. Sturdy footwear is essential as the basalt columns are wet and uneven. The site receives around one million visitors per year and is busiest from June to August; arriving early in the morning or in the final two hours before closing significantly reduces congestion at the most popular column formations.
Good to know
- Hours
- Daily 09:00-18:00
- Best for
- nature lovers, photographers, geology enthusiasts, hikers
Location
60 Causeway Road, Bushmills BT57 8SU
55.2408, -6.5116 View on map
Highlights
- 40,000 interlocking hexagonal basalt columns descending into the sea — the result of volcanic activity 60 million years ago
- Iconic formations including the Giant's Boot, the Wishing Chair, and the towering Grand Causeway
- Clifftop walking routes with panoramic views of the Antrim coast and across to Scotland on clear days
- Award-winning visitor centre with geological and mythological exhibits on the Fionn Mac Cumhaill legend
- Shepherd's Steps — a steep staircase linking the clifftop trail to the causeway, with outstanding elevated views
Tips for visiting
- Walk down to the stones is free; fee is for visitor center and parking
- Visit at sunrise or sunset for dramatic lighting and fewer crowds
- Wear sturdy shoes as the stones can be slippery
When to visit
Arrive at opening time (09:00) or in the final two hours of the day for significantly fewer people at the columns. May and September offer the best balance of good light, mild weather, and manageable crowds.
Accessibility
The path from the visitor centre to the causeway is surfaced and accessible for wheelchairs and pushchairs. The causeway columns themselves are uneven and cannot be navigated by wheelchair. A shuttle bus between the visitor centre and the causeway level operates seasonally and is accessible. The clifftop walking routes involve steps and steep terrain.
Frequently asked questions
Is it free to visit the Giant's Causeway?
Walking down to the causeway itself is free and always has been. The charge applies to the visitor centre, its exhibitions, and the car park. Visitors can park in nearby Bushmills village and walk to the site to avoid the car park fee.
How long does a visit to the Giant's Causeway take?
The circular walk down to the columns and back along the clifftop takes 1.5 to 2 hours at a comfortable pace. Adding the longer coastal trail extends the visit to 3-4 hours. The visitor centre exhibitions add approximately 45 minutes.
Is the Giant's Causeway suitable for children?
Yes — the stepping stone nature of the basalt columns makes the causeway an engaging physical experience for children. Younger children and those in pushchairs are best suited to the shorter causeway walk; the clifftop trail is steep in places and not pushchair-friendly.