Human: Generate for a chilling scene inside a mansion with alabaster serpent heads and an archway. Assistant: 
Drastically unfurling from the narrow halls, the arc-shaped room expands into a sizeable foyer. Iron-caged lanterns, each alight with a sickly green radiance, are hung strategically in the outer most corners of the area. A pair of wall-mounted alabaster serpent heads with glinting bronzed fangs leap out from either side of a polished acacia archway.