The Château du Gazeau is a historical monument located on the territory of the commune of Sainte-Ouenne in the department of Deux-Sèvres in France. It is a former relay of Santiago de Compostela whose construction dates back to the fifteenth century The Château du Gazeau is located along the Egray valley. The site consists of various buildings with in particular a chapel and a forty-metre long gallery intended for the accommodation of pilgrims. At the entrance, the two turrets are the remains of a surrounding wall.