The castle of Mongenan, a real «cottage with surprises», has exactly preserved its 18th century decor. Furniture, objects, paintings, books, musical instruments, remained in the same place, testify to the art of living under Louis XV and to the permanence of this unchanged harmony. Each object is commented during this exceptional visit of the antechamber which serves as a dining room, the music room, the company room and the gallery of prints.