Giant's Causeway: Top Photos

Forty thousand hexagonal columns left by an ancient eruption

Giant’s Causeway, Northern Ireland. Hexagonal basalts.
Giant’s Causeway, Northern Ireland. Hexagonal basalts. © Chmee2, CC BY 3.0, via Wikimedia Commons

Explore Giant's Causeway

Take Quiz

Think you know Giant's Causeway? Take our 10-question quiz and find out.

Read More

Discover the highlights of Giant's Causeway in our curated guide.