The Giant’s Causeway is truly one of Ireland’s best natural wonders. There was extensive volcanic activity over 50 million years ago, the hot lava cooled resulting in the formation of over 40,000 interlocking basalt columns. There are a few examples of this phenomenon around the world but none as impressive as the Giant’s Causeway. Spend two hours exploring this fantastic attraction with its many notable features such as the Giants Boot, the Chimney Stacks, the Giant’s Gate, and the Honeycomb.