The first live-action depiction of Argo City came in the 1984 film Supergirl. In the film, Argo City exists as an isolated community that survived the planet Krypton’s destruction, but not by some ...
But that’s not the goofy part. As revealed in Action Comics #252, when Krypton exploded, the chunk of the planet with Argo City on it just floated away, containing thousands of Kryptonian survivors.