The chapel of Tourbillon Castle, dedicated to Saint George, is located to the south-east of the enclosure and consists of two bays; the one accessible from the north-west serves as the nave. Originally, the ceiling of the west bay was made of wood, but during one of the reconstructions it was reworked into a vaulted ceiling. The only opening on the south side dating from the construction of the building was an oculus, but subsequent renovation work has led to three other openings which make the oculus badly centred. The choir of the chapel is adorned by two tori resting on columns and has had a vaulted ceiling since its construction. This ceiling rests on a crossing of ogives.