Exception must be made in favour of two apartments between the towers upon the southern facade. These were apparently the private rooms of the Duke and Duchess, and they are still approached by a great winding staircase in one of the torricini. Adorned in indestructible or irremovable materials, they retain some traces of their ancient splendour. On the first floor, opening on the vaulted loggia, we find a little chapel encrusted with lovely work in stucco and marble; friezes of bulls, sphinxes, sea-horses, and foliage; with a low relief of Madonna and Child in the manner of Mino da Fiesole. Close by is a small study with inscriptions to the Muses and Apollo. The cabinet connecting these two cells has a Latin legend, to say that Religion here dwells near the temple of the liberal arts:
Bina vides parvo discrimine juncta sacella,
Altera pars Musis altera sacra
Deo est.
On the floor above, corresponding in position to this apartment, is a second, of even greater interest, since it was arranged by the Duke Frederick for his own retreat. The study is panelled in tarsia of beautiful design and execution. Three of the larger compartments show Faith, Hope, and Charity; figures not unworthy of a Botticelli or a Filippino Lippi. The occupations of the Duke are represented on a smaller scale by armour, batons of command, scientific instruments, lutes, viols, and books, some open and some shut. The Bible, Homer, Virgil, Seneca, Tacitus, and Cicero, are lettered; apparently to indicate his favourite authors. The Duke himself, arrayed in his state robes, occupies a fourth great panel; and the whole of this elaborate composition is harmonised by emblems, badges, and occasional devices of birds, articles of furniture, and so forth. The tarsia, or inlaid wood of different kinds and colours, is among the best in this kind of art to be found in Italy, though perhaps it hardly deserves to rank with the celebrated choir-stalls of Bergamo and Monte Oliveto. Hard by is a chapel, adorned, like the lower one, with excellent reliefs. The loggia to which these rooms have access looks across the Apennines, and down on what was once a private garden. It is now enclosed and paved for the exercise of prisoners who are confined in one part of the desecrated palace!