History
The Chaumont-sur-Loire Castle was established in the 10th century by Odo I, Count of Blois, as a strategic fortress to defend his lands against rival factions, notably the Counts of Anjou.
Fast-forward to 1550, when Catherine de' Medici purchased the castle. After the death of her husband, King Henry II, in 1559, she compelled his mistress, Diane de Poitiers, to exchange the Chenonceau Castle for Chaumont. Diane de Poitiers resided at Chaumont only briefly before retiring to her estate at Anet.
The final private owner was Marie Say, heiress to a sugar fortune, who acquired the castle in 1875. She and her husband, Prince Henri-Amédée de Broglie, commissioned significant restorations and added luxurious stables. In 1938, Marie Say donated the estate to the French government.
Today, the castle is renowned for hosting the annual International Garden Festival, which showcases global innovative garden designs.