Geography
While Australia is the largest island in the world, it is also the smallest existing continent. Surrounded by the Indian and Pacific Oceans, it covers about 4,000 kilometres from east to west and 3,200 kilometres from north to south.
Foodstuff
Vegemite (you either love it or you hate it) is a paste made from leftover brewers' yeast extract - developed in Australia in 1922.
Sport
Sport is an integral part of Australian culture. Its British heritage in that regard is quite conspicuous; the most popular sports in Australia are rugby, cricket and footy (Australian football).
Indigenous Population
Australia is home to about 450,000 Aboriginal people, which make up approximately 2% of the country's total population.
Many Religions
Catholic Christians, Anglicans, Muslims, Protestants, Buddhists, Jews... A wide variety of religions are represented in Australia. The Aborigines have their own spiritual beliefs as well.
As for Celebrities...
Nicole Kidman, Hugh Jackman and Russell Crowe are just a few celebrities who were born in Australia.