Giant's Causeway

The Giant's Causeway is Northern Ireland's only UNESCO World Heritage Site, and it earns the designation. The basalt columns — around 40,000 of them, mostly hexagonal, packed together like a vast geometric pavement that descends into the sea — are genuinely spectacular, and the coastal setting is dramatic: cliffs above, the North Atlantic below, and on a clear day the coast of Scotland visible to the northeast.

The visitor centre at the top is well done and explains the geology clearly. The walk down to the Causeway itself takes about 15 minutes; a coastal path leads east to the Chimney Tops viewpoint and west toward the bays of Port Noffer and Port Reostan. The Red Trail walk (about 2km) takes in the best of it. Arrive early in the morning to avoid the main crowds; the site is operated by the National Trust and parking fees apply.

things to do sight
A story
The Causeway has two origin stories. The geological version: a volcanic eruption 60 million years ago created a basalt flow that cooled slowly, contracting into the hexagonal columns. The mythological version: the Irish giant Finn McCool built the causeway as a bridge to Scotland so he could fight his rival Benandonner — then, realising Benandonner was bigger than expected, had his wife dress him as a baby. When Benandonner saw the size of the "infant," he fled back to Scotland, tearing up the causeway behind him.