Giant's Causeway, northern Ireland:
It's easy to see how legends grew up around this masterwork. Volcanic eruption has shaped thousands of basalt columns into precise hexagonal shapes, grouped together like organ pipes. It's almost impossible to believe that they haven't been carved by human hands. The mythology of the place has the famed warrior Finn McCool swapping shouted threats with a Scottish giant over the sea. They started to make a causeway so they could get their hands on each other. (Geology supports the myth: there are similar structures on the Scottish side of the sea.) Don't miss particularly sculptural structures like the Giant's Boot and the Chimney Stacks.
Source: msn