I don't have kids, so I'm not an expert. But I think I know that kids of a certain age like bouncy castles. This one was one of two at the Château de Valençay. Our friends' kids, Julia and Conor, really got a kick out of this Harry Potter-themed bouncy castle. I didn't get any good photos of Julia, but Conor was hamming it up.
In addition to the bouncy castles, there is a tiny petting zoo with goats and chickens and ducks and turkeys and sheep. They also have a little play area with swings and slides and teeter-totters. The place is the most kid-friendly château that I've ever seen.
They even have a labyrinthe (maze) that I've never paid attention to before. Until this time. We entered the maze and had a ton of fun. More on that later.