Like Canada, Australia is a massive, largely empty country with a relatively small population that somehow manages to sustain the world's most unaffordable residential real estate anywhere in the world.
Sydney and Melbourne rank alongside Toronto, Vancouver, Zurich and Hong Kong well ahead of New York, London, San Francisco, and Tokyo in terms of housing prices.
Fun fact: there are 15 US states that are physically larger than the island of Great Britain, as is every continental state/territory of Australia save Canberra.
For those playing at home, those 15 states are Alaska, Texas, California, Montana, New Mexico (old Mexico is as well), Arizona, Nevada, Colorado, Oregon, Wyoming, Michigan, Minnesota, Utah, Idaho and Kansas. Nebraska is the largest US state that is smaller than Great Britain.
And as everyone should be aware, if Texas were somehow grafted onto the Spanish coast, it would become the largest country in Europe excluding the European portion of Russia as it is larger than France and Ukraine.