This paper explores the ways that Horace Walpole’s Gothic texts, The Castle of Otranto, The Mysterious Mother, and even the architectural Strawberry Hill, operate within a fascinating nexus of visual and narrative discourse. By analysing the intersections of the verbal and visual within these works, which combine and collide within liminal spaces that figure a threshold state between the supernatural and the subconscious, this paper explores the ways that Walpole’s texts work collectively to interrogate eighteenth-century theories of perception and imagination by positing a slippage between word and image that undermines the human attempt to make sense of the world.