10 awe-inspiring UNESCO world heritage sites everyone needs to visit

The Great Barrier Reef, off the coast of Queensland Australia, is the largest living thing on earth. It’s so huge that you can see it from outer space! Stretching for over 2,300 kilometres, this ecosystem is home to a diversity of marine line, including 400 types of coral, 1500 species of fish, and 4000 varieties of molluscs. Not surprisingly it’s a magnet for scuba divers.