Australia has 13 small independent states or so-called Micro Nations established by Australian citizens either for tax rebates, as in Hut River in Western Australia or because of disputes with the municipality because of building conditions, as in the case of Why
Before you dream of creating your own kingdom, you must know that these states do not have any real national sovereignty and are not recognized by Australia and the world, but an attempt by their founders to declare a position towards a law or an issue!
Find out more about these states in the link above