The Giant's CausewayA nature reserve and a UNESCO World Heritage Site, the Giant's Causeway is an area of about 40,000 interlocking basalt columns, the result of an ancient volcanic eruption Vladimira Dvorakova / age fotostock;
The coasts of Northern Ireland have opted for variety: long sandy beaches alternate with parcels of rocky coast striped with cliffs, volcanic masses, and of course, the renowned basalt columns of the Giant's Causeway.