Without any human influence, nature has created extraordinary wonders - from majestic mountains and bubbling volcanoes to amazing plants and animals. These wonders are found across all the continents and oceans of this planet. In a tour of the seven greatest wonders of Europe, we'll encounter Iceland, a land full of volcanoes. One of them erupted in 1963, creating a brand-new island. We'll also see Mons Klint, a giant white cliff in Denmark, and the...