Its walls were from five hundred and seventy to seven hundred feet in length, fifty feet in height, and encompassed nine and one-half acres of ground. The eminent English architect, Adam, who, in 1757, accomplished the difficult and arduous task of plotting the first plans of the ruined palace on paper with no previous mathematical data to guide him, said that it was “a climax in architecture.” So much of its original splendour did it retain that the imperial Roman historian avowed that “it surpassed even in its ruin all powers of description;” and that was more than six centuries after Diocletian’s death. On the south side, facing the sea, the walls were seventy feet in height, because of the sloping of the land. The outline of this stone-work was broken by a grand total of sixteen towers, only four of which, those on the corners, were higher—and that only by a few feet—than the walls themselves. There were four entrance gates to the palace and three of these can still be distinguished. If you could have entered the north gate of the palace at a time when its builder and owner was ripening in years within its precincts, you would have looked down on a street thirty-six feet in width. On either side, graceful stone arcades dwindled into the perspective and at the farther end of the street the view was interrupted by the massive portico and dome of the vestibule to the imperial residence. At a point three hundred feet south of this gate, where you would have stood, the lines of arcades were exchanged for the beautiful columns of a peristyle, on either side of which were enclosed courts, that to the right containing the temple of Æsculapius and that to the left, the temple of Jupiter. Near the peristyle, a street, also fringed with arcades, crossed from west to east, having its termini at the Porta Ferrea and the Porta Ænea respectively. To the south of the vestibule the nave of the palace, ninety-eight feet long and forty-five feet wide, lined with rows of columns and an aisle fourteen feet in width on either side, extended from west to east. Mosaics and multi-coloured marbles made up the decorations of the interior of the apartments, and the beauty of the courts was enhanced by the flowers and plants of this latitude. From the peristyle, the columns of which were of Cipallino and rose-coloured granite, flights of steps led to the temples at the sides. The Temple of Jupiter, which originally stood apart in a walled court having the peristyle as a screen in front, was built by Diocletian as a prospective tomb in which he intended his body to be placed after death, but now the building serves as the Duomo of Spalato. Originally it had a projecting portico of its own in front, but this has been replaced by the campanile of the Duomo. The other of the two temples, that of Æsculapius, does duty to-day as the city’s baptistry.