10. Ellesmere Island
Area: 196,236 km² / 75,767 sq mi
Ellesmere Island, the number 10 on our list of biggest islands on Earth, is the third largest island in Canada and the largest of the Queen Elizabeth Islands in the country. It is the most northerly island in the Arctic Archipelago. The island lies in Nunavut territory, and the Kennedy Channel and Kane basin separate it from Greenland. Along with being interestingly located, Ellesmere also has a fascinating history associated with it and is believed to have been visited by the Vikings in the 10th Century. Speaking of Canada, we should mention that this is the country which has the longest coastline (125,567 miles, to be precise).