The island of Hawaii is the youngest and largest island in the Hawaiian chain. Nearly twice as big as all of the other Hawaiian Islands combined (hence, its nickname, “Big Island”), its sheer size is awe-inspiring. You can travel through all but four of the world's different climate zones here, ranging from Wet Tropical to Polar Tundra, a result of the shielding effect and elevations of the massive volcanoes Maunakea and Maunaloa.