The Empire of Atlantium is a micronation and secular, pluralist progressive lobby group[1] based in New South Wales, Australia.

The book's entry on Atlantium notes its espousal of "progressive, liberal policies" and characterises it as a "secular humanist utopia".

The three claimed a 10 square metres (110 sq ft) "provisional territory" in the southern suburb of Narwee as Atlantium's first capital, and declared Cruickshank to be Sovereign head of state, with the title "Emperor George II".

In 1999 Cruickshank purchased an apartment in the inner Sydney suburb of Potts Point, and soon after revived Atlantium, launching a website, which was instrumental in attracting new members.

Atlantium had appointed "unaccredited diplomatic representatives" called "Imperial Legates" in the United States, Pakistan, Poland, Brazil, India, Italy, Iran, Singapore, Serbia and Switzerland.

[11] The group had awarded "Imperial Honours" to various recipients, generally in recognition of political activism or for service to local communities.

The coin had the likeness of George Cruickshank on the obverse and the wedge-tailed eagle (Aquila audax) on the reverse and was struck in cupronickel and plated with 9 carat gold.