Maps comparing Australia's size to other countries and regions in the world.
Map showing Australia over Europe. Broome to Sydney covers the same distance as England to Turkey. Perth to Sydney is like travelling from Spain to Syria.
Another way to understand how big Australia is to imagine these countries collectively fitting inside the Australian continent: Albania, Austria, Cambodia, Denmark, East Timor, Ecuador, France, Germany, Greece, Hong Kong, Italy, Japan, New Zealand, Portugal, Romania, Singapore, South Africa, South Korea, Sri Lanka, Taiwan, The Netherlands, United Kingdom, and West Malaysia. Even then, there are still significant gaps even when all these countries are placed inside the Australian continent.
The map above shows Australia overlayed with the USA (without Alaska). Both countries main landmass are comparible in size. While Alaska is not shown, Australia does have a large region in the Antarctica called 'Australian Antarctic Territory' which covers nearly half of the Antarctic continent. However, USA doesn't recognise this territory but other countries such as Britain and France do.
The Great Barrier Reef is the largest reef system on Earth, It is made up of about 3000 individual reefs. Clearly visible from space, it has the equivalent length of the eastern coastline of the USA. It also measures about the same length as The Netherlands to southern Italy or England's south coast to the top of northern Africa.