Great Barrier Reef
The Great Barrie Reef is a globally recognized landmark of Australia. When you will see it you will believe it. It consists of approximately 3,000 individual reefs and almost 1,000 islands spreading for over 1,400 miles.
While the Great Wall of China is often mistakenly described as being visible from space, but astronauts and satellites have also said that they have captured images of the Barrier Reef too.
Lots of work has been done to ensure that the delicate ecosystem of the reef is preserved for the future. If you want to explore underwater world this wonder is the place for you.