In 1556, Guidobaldo finished the citadel and fortifications of Sinigaglia, which had occupied him during ten years, and which were considered an important bulwark against Turkish descents on the Adriatic coast. There also he instituted a college for the study of gunnery; and he commemorated the completion of these establishments by striking four medals, of which three are described by Riposati; none of them, however, merit special notice, the beauty of Italian dies being already on the wane. The court was now for the most part resident at Pesaro, a situation excelling in amenity and convenience the original capital of the duchy. Among its attractions may be numbered the palace-villa of Imperiale, which has been described; but it became necessary to provide a town residence, that in the citadel, which had sufficed for the Sforza, being far too restricted for the demands of growing luxury. Of the palace at Pesaro, Guidobaldo II. may be considered the entire author,[*58] and if it seem scarcely suited for the accommodation of so famed a court, we must recollect that the golden days of this principality were already passing away, that the military qualities of its sovereigns and people had become less gainful, and the devotion of its dukes to letters and arts was beginning to languish. Although extensive, the aspect of this residence is mean, its buildings rambling. It exhibits no appearance of a public edifice except the spacious _loggia_ or arcade. Over this, its single external feature, is the great hall, measuring 134 by 54 feet, and of well-proportioned height. Here we find some interesting traces of the della Rovere, in those quaint and significant family devices which it was their pride unceasingly to repeat. The manifold compartments of its richly stuccoed ceiling contain their heraldic badge, the oak-tree; the ermine of Naples; the half-inclined palm-tree; the _meta_, or goal of merit, and similar fancies.[59] These recur among delicately sculptured arabesques on the internal lintels, and ornament the imposing chimney-pieces, varied by figures of Fame strewing oak-leaves and acorns. This palace was later the winter residence of the cardinal legates of Urbino and Pesaro, of whom portraits, from the Devolution of the duchy to the Holy See, in 1626, surround the great hall. In 1845, Cardinal della Genga was the forty-eighth of this long succession. [Footnote *58: It was probably the work of Girolamo Genga (1476-1551) and his son Bartolomeo (1518-58). It is now the Prefettura. It has never struck me as "mean," but rather as being a somewhat imposing building.] [Footnote 59: See these devices explained in No. V. of the Appendix to Vol. I. The respective importance of the ducal residences is marked by their colloquial epithets,--the _corte_ at Urbino, the _palazzo_ at Pesaro, the _casa_ at Gubbio.]