Located near Bordeaux, this former residence of the Kings of Navarre was at one time owned by King Henri IV of France and Queen Margot. Well worth a visit : the royal apartments with period furniture, the famous medieval underground caves where prestigious Bordeaux wine is left to age, the troglodyte caves under the chateau, and various exhibitions (sarcophagi, ancient coins, weapons, parchments, etc...). There are also beautiful grounds with trees all along the famous Ciron gorges.