Gorgo was originally intended to be set in Japan as an homage to Godzilla; the setting was then changed to France and then finally to the British Isles. According to Bill Warren's film book Keep Watching the Skies, southern Australia was also considered for a locale, but the producers supposedly decided that audiences "wouldn't care" if a monster attacked Australia; its alleged lack of worldwide recognisable landmarks for Gorgo to destroy was also cited as a consideration.