10 Places You Should Visit Before They Vanish
1. Great Barrier Reef, Australia
Officially the largest coral reef in the world at 133,000 sq miles (344,400 sq km), the wonderous aquatic delight draws millions of tourists Down Under each year, yet delve deeper into the history of the popular attraction, and you'll discover that it isn't quite what it was.
Worryingly, the environmental challenges the hotspot attracts range from rising ocean temperatures to mass levels of rubbish and pollution, meaning this beloved wonder could be completely wiped out within the next 100 years.