Image: Sarah Lai / AFP
In a draft report released ahead of a key meeting next month, the UN's Educational, Scientific and Cultural Organization (UNESCO) recommended Monday a major revamp of the heritage list.
Here are some of the sites that risk losing their treasured Heritage Site status, a move that could seriously dent their tourist appeal.
Great Barrier Reef: in danger
Stretching 2,300 kilometres (1,400 miles) along Australia's northeast coast, the world's largest coral reef system, a huge draw for tourists, has been battered by global warming.