Watch How These 12 Amazing Landmarks Get Ruined By Tourists

The Great Barrier Reef, Australia

One of the world’s seven natural wonders, Australia’s Great Barrier Reef stretches 1,430 miles along the Queensland coast. A huge tourism industry has developed in resorts all along the coast to ferry tourists out to see the underwater splendors of the World Heritage-listed marine park. It receives around two million visitors a year.

As well as the worrying effect of careless tourists on the health of the world’s largest coral reef ecosystem, the sheer number of boats heading out to the reef can be off-putting.

There are approximately 820 operators and 1,500 vessels operating in the marine park and you can find yourself elbow-to-elbow with fellow snorkelers as you try to ogle a clownfish. Book a small boat tour to avoid sharing the water with hundreds of other day trippers, preferably to the outer reef or islands.