Discover the natural wonders of Australia on our detailed map. From the Great Barrier Reef to the Outback, Australia has it all. Australia is a country and continent surrounded by the Indian and Pacific oceans. Its major cities - Sydney, Brisbane, Melbourne, Perth, Adelaide - are coastal. Its capital, Canberra, is inland. The country is known for its Sydney Opera House, the Great Barrier Reef, a vast interior desert wilderness called the Outback, and unique animal species like kangaroos and duck-billed platypuses.