24 Famous places to visit before they disappear

Congo Basin, West Africa

Occupying a total area of 3.7 million sq km (1.4 million sq mi), the Congo Basin is home to some of the world´s largest tropical rainforests that produce up to 40% of world´s oxygen. However, almost 10 million acres of the forests are lost due to mining, agriculture, illegal logging, and wars every year. It is estimated that up to 2/3 of the forests will be gone by 2040.