After this, Giuliano wishing to make a vaulted ceiling for the great hall of that palace in the manner that we call barrel-shaped, Lorenzo could not believe, on account of the great space, that it could be raised. Whereupon Giuliano, who was building a house for himself in Florence, made a ceiling for his hall according to the design of the other, in order to convince the mind of that Magnificent Prince; and Lorenzo therefore gave orders for the ceiling at the Poggio to be carried out, which was successfully done. By that time the fame of Giuliano had so increased, that, at the entreaty of the Duke of Calabria, he was commissioned by Lorenzo the Magnificent to make the model for a palace that was to be built at Naples; and he spent a long time over executing it. Now while he was working at this, the Castellan of Ostia, then Bishop della Rovere, who after a time became Pope Julius II, wishing to restore that stronghold and to put it into good order, and having heard the fame of Giuliano, sent to Florence for him; and, having supplied him with a good provision, he kept him employed for two years in making therein all the useful improvements that he was able to execute by means of his art. And to the end that the model for the Duke of Calabria might not be neglected, but might be brought to conclusion, he left it to his brother Antonio, who finished it according to his directions, which, in executing it and carrying it to completion, he followed with great diligence, for he was no less competent in that art than Giuliano himself. Now Giuliano was advised by the elder Lorenzo to present it in person, to the end that he might show from the model itself the difficulties that he had triumphed over in making it. Whereupon he departed for Naples, and, having presented the work, was received with honour; for men were as much impressed by the gracious manner in which the Magnificent Lorenzo had sent him, as they were struck with marvel at the masterly work in the model, which gave such satisfaction that the building was straightway begun near the Castel Nuovo.