7. Mount Roraima, Venezuela, Brazil, Guyana

2.2 million years ago this massive mountain formed on the border of Guyana, Brazil and Venezuela. The most intriguing part of the mountain is the large plateau at the very tip top, 9,000 feet up in the clouds where it rains nearly everyday. The sheer height of the plateau has inspired writers, explorers and many others throughout history. A wide variety of unique wildlife thrives here, although few will ever have a chance to see.