Which country has the world's oldest rainforest?

The world's most ancient forest is in Australia.

The Daintree Rainforest is a region on the northeast coast of Queensland, Australia, north of Mossman and Cairns. At around 1,200 square kilometers (460sq mi). It is estimated to be 180 million years old which is tens of millions of years older than the Amazon Rainforest.

The Daintree Rainforest is a part of the Wet Tropics of Queensland Rainforest, that spans across the Cairns Region. The Wet Tropics Rainforest (that the Daintree is a part of) is the oldest continually surviving tropical rainforest in the world. Along the coastline north of the Daintree River, tropical forest grows right down to the edge of the sea.

The rainforest is named after Richard Daintree, an Australian geologist and photographer (1832- 1878). The area includes the Daintree National Park, some areas of states forest and some privately owned land, including a residential community.