what is 'gothic' about frankenstein's encounter with the creature?

Consider sights like a dimly lit castle, an old mansion on a hilltop, a misty cemetery, a forlorn countryside, or the laboratory of a scientist conducting frightful experiments. In Chapter seven Victor lurks around William's grave. He sees the monster he created for a moment and it occurs to him that, since the monster isn’t attractive, he probably committed the murder. No one else has seen this monster or knows anything about it. All this fits in with the macabre elements of the gothic narrative.