What is the capital of Australia?

The capital of Australia is Canberra. It was selected as a compromise between Sydney and Melbourne, the two most populous cities in Australia, after a long debate about where the capital should be located. Established as the capital in 1913, Canberra was purpose-built for this role, designed by the American architect Walter Burley Griffin. The city houses important government institutions, including the Parliament House and the High Court of Australia, which are central to the governance of the country.

The other cities mentioned are significant in their own right but do not serve as the capital. Sydney is known for its iconic landmarks like the Sydney Opera House and Harbour Bridge, while Melbourne is renowned for its culture, arts, and coffee scene. Brisbane, as the capital of Queensland, is recognized for its warm climate and riverfront, but none of these cities hold the status of political capital that Canberra does.