I spent a short week camping in the Freycinet National Park, in a remote location at the summit of a steep cliff that looks onto water. I have lasting memories of it: cliffs covered in pinewood plunging into a turquoise blue sea. The park offers countless hiking possibilities, across lush greenery and full of exotic animals. I remember seeing wombats, echnidas, kangaroos, wapitis and several very venomous snakes!
However, the most popular ramble which leads you to Wine Glass Bay, the famous bay with incredibly white sand and blue water, is quite popular, and you sometimes get the impression of being on the Avenue des Champs-Elysées on 14th July rather than in a National Park at the heart of Tasmania.
But I would particularly recommend passing through the Freycinet National Park during an Australian circuit.
The Freycinet National Park is one of the most beautiful in Tasmania. It has distinctive pink and orange granite cliffs, an azur blue sea and white, sandy beaches. The Hazards Range, at the park's entrance, is great for a short hike with stunning views over the bay. Continue past the watchtower at Wineglass Bay towards the magnificent sandy beach, before returning to the park's entrance. Along the way you'll find spots with views over Great Oyster Bay and the coastline around Swansea. I recommend you do this hike at sunrise or sunset, when the luminous, pink granite rocks glitter in the sunlight.
If you're up to it, you can hike along the entire length of the Freycinet Peninsula, a trek that takes three days. Finally, the Freycinet National Park is great for birdwatching, an area where you'll spot white-bellied sea eagles and southern gannets.