Giant's Causeway, County Antrim, Northern Ireland, UK
It's hardly surprising that this surreal rock formation on the coast of Antrim in Northern Ireland is steeped in magical legends. The curious, near-perfect hexagonal columns are a marvel of nature. According to folklore, the causeway was built by Irish giant Finn McCool so he could cross over to Scotland to confront his rival Benandonner. However, scientists would have it that the basalt 'steps' were caused by intense volcanic activity some 50 to 60 million years ago.