1. Timanfaya National Park
Where: Lanzarote
Timanfaya is different from those natural parks where you can't tell exactly where they start and where they end. An expanse of dark, rugged terrain with no vegetation, the singular landscape here has an almost extraterrestrial look and feel. This is the magic that was uncovered after the area’s volcanoes erupted in the late nineteenth century, spewing lava and devastating Lanzarote for several days. Timanfaya was born out of that event, creating the island's only national geological park and a true natural wonder. The temperature is a sizzling 400ºC just four metres below ground – and park staff are on hand to demonstrate the speed at which water evaporates when poured into a hole.