The Castle of Argol is a fictional fortress featured in the novel "The Castle of Argol" by Julien Gracq. It is set in a mysterious landscape, characterized by its imposing architecture and atmospheric surroundings. The castle serves as a central location for the story, embodying themes of isolation and the passage of time. The narrative explores the lives of its inhabitants, who grapple with their emotions and the weight of history. The castle's intricate design and haunting ambiance contribute to the overall mood, making it a significant symbol within the literary work.