The basement of the Oratorio de la Santa Cueva houses an austere Penitential Chapel, whose sole ornamentation, a group of sculptures with Christ on the Cross, is lit only by natural light. On the first floor, the Eucharistic Chapel, a true jewel of neo-Classical art, is exuberantly decorated. Elliptical in shape, it has a lunette dome borne on Ionic columns. Here you can admire three magnificent paintings (1795) by Goya.