Inside the legendary bedchamber that history has forever associated with Diane de Poitiers — the brilliant, ageless royal mistress who reigned over the French court for decades — a Renaissance four-poster bed draped in embroidered fabric anchors a room whose every surface tells a story: monogrammed ceiling coffers, richly colored tapestries on the walls, an ornate carved cabinet, and above the doorway a gilded portrait frame catching the dim light of the château's thick stone walls. Diane received Chaumont-sur-Loire in 1559 from Henri II, only to be forced out by the newly widowed Queen Catherine de Médicis, who coveted Chaumont's strategic Loire-valley position and handed Diane Chenonceau in exchange — a swap that still feels like historical theater. Published by Edition A. Simon, card number 7, this early divided-back card with the distinctive red-ink publisher format dates to roughly 1905–1915 and was produced when Chaumont's storied interiors were first being systematically documented and sold to tourists. The Diane de Poitiers bedroom is one of the most requested views in the entire Chaumont series, making this a standout piece for Loire Valley château collectors.