Queensland has some of the most varied national parks in Australia — from the ancient rainforest of the Wet Tropics World Heritage Area to the red sandstone gorges of Carnarvon, and from the dune lakes of Fraser Island to the remote river country of the Cape York Peninsula. Taken together they cover an enormous range of ecosystems and experiences, and several rank among the best wilderness destinations on the continent.
The standout is Fraser Island (K'gari), off the Hervey Bay coast — the world's largest sand island and a UNESCO World Heritage Site. You drive 4WD along the beach, swim in clear freshwater lakes perched high in the dunes, and walk through tall rainforest that somehow grows in pure sand. It deserves at least three days.
Further north, Eungella National Park is Queensland's largest rainforest park — over 50,000 hectares of cloud forest in the Clarke Range above Mackay. It's the best place in Australia to spot a platypus in the wild; the creek at Broken River is famous for reliable sightings at dusk. The birdlife is exceptional and the walking trails are well-maintained.
At the far northwest corner of Queensland, Lawn Hill National Park (Boodjamulla) protects a dramatic limestone gorge cut through the outback — bright turquoise water, ancient stromatolites, and Waanyi rock art. It's genuinely remote and genuinely spectacular. Carnarvon Gorge, in central Queensland, is more accessible and offers some of the most significant Aboriginal stencil art galleries in the country, alongside sandstone cliffs and fern-filled side canyons.
If you're in the far north, Daintree National Park covers the oldest tropical rainforest on Earth, coming right down to the Coral Sea — the classic "where rainforest meets reef" experience. Combined with a snorkelling trip on the Great Barrier Reef, it makes a compelling reason to base yourself around Port Douglas or Cape Tribulation.