The walls of the Château de Fougères-sur-Bièvre are made of hard Beauce limestone rubble, while a softer, whiter stone, tuffeau from the banks of the Cher, is used for the molded or sculpted parts.
The castle is built on the model of medieval castles, with a central square building, the keep, and four towers at each corner. Inside the keep, there are five habitable levels built on the same model: four square apartments and four apartments in the round towers per level.
The double staircase is at the center of the building, giving access to the second floor (historical apartments), the second floor (dedicated to hunting and wildlife art) and the large terrace, before being crowned by the lantern tower and the fleur-de-lis, symbol of the French monarchy.