1. The Great Barrier Reef: The world's largest coral reef system, stretching over 2,300 km (1,400 mi).
2. The Outback: A vast, arid region covering much of central and western Australia, known for its unique flora and fauna.
3. Uluru (Ayers Rock): A massive rock formation in the Northern Territory, considered a sacred site by Indigenous Australians.
4. The Sydney Harbour Bridge: An iconic landmark of Sydney, one of the world's longest steel arch bridges.
5. The Sydney Opera House: A renowned performing arts center in Sydney, known for its distinctive sail-like design.
6. The Great Ocean Road: A scenic coastal drive in Victoria, featuring the Twelve Apostles, a group of limestone stacks rising from the sea.
7. Kakadu National Park: A UNESCO World Heritage site in the Northern Territory, known for its stunning natural landscapes, Aboriginal rock art, and diverse wildlife.
8. The Daintree Rainforest: One of the oldest rainforests in the world, located in Queensland and home to unique plant and animal species.
9. Fraser Island: The world's largest sand island, located off the coast of Queensland and known for its sand dunes, freshwater lakes, and diverse ecosystems.
10. The Pinnacles: A group of limestone formations in Western Australia, resembling ancient standing stones and located within Nambung National Park.