#4 The Great Barrier Reef, Australia

The Great Barrier Reef is the largest coral reef ecosystem on earth and one of the best managed marine areas in the world. The reef is one of the richest and most diverse natural ecosystems on Earth.

The Great Barrier Reef can be seen from outer space and is the world's biggest single structure made by living organisms. This reef structure is composed of and built by billions of tiny organisms, known as coral polyps. It supports a wide diversity of life and was selected as a World Heritage Site in 1981. CNN labeled it one of the seven natural wonders of the world. The Queensland National Trust named it a state icon of Queensland.






If your in the land down under this cannot be missed!