Its name may either be a play on "Atlantis", or the phrase "air land is"; whereas the second and third syllables may be a reference to the word "island". It is an air-borne city (see Laputa), golden in color. Five large "bio-spheres" hover in its centre, each simulating a different natural habitat and thus the breeding grounds and shelter of the species rescued from the "Cataclysm". In one episode, Aaron, the protagonists' father, is seen tranquilizing and tagging a polar bear, on purpose to monitor it, in the Arctic tundra bio-sphere.
The city's most important region is it's "power core", operated by the engineer Orac, who requires a regular supply of "Amber". Additionally Airlandis has a runway for the Dragonators, a Dragon aviary (where the Dragons reside when not needed to fly) a Council Chamber (where matters of government are negotiated) a Control Room (known as "Skywatch", where a team of uniformed men keep watch on the city's systems and monitor the skies) and a prison. Dialogue implies that Airlandis is a temporary solution, whereof the populace seek a residence on the surface untouched by the Cataclysm.
It is implied in one episode that some humans escaped the Cataclysm aboard a space station, though little is said of this.