Located in Northern Ireland, these beautiful structures were created due to a volcanic eruption. Originally from the North Atlantic Igneous Province, the Giant’s Causeway was part of a lava plateau called the Thulean Plateau. Due to continental drift, the plateau broke into pieces during the Paleogene period, which is roughly 60 millon years ago. The basalt lava contracted and cracked downwards as it cooled down, giving the pillars their unique shape.