The ruin O of the topographical plan (Fig. 78) shows the remains of a similar structure of about the same dimensions, later, and therefore of less interest, than the Palace of Darius. The Palace of Xerxes (L, M, N) was nearly double this size, being provided with a spacious terrace before its gates, and with a colonnade upon one side, the nature of which cannot readily be explained. On the other hand, it had no large chambers behind the hypostyle, as the rooms upon the right and left seem, by their more spacious proportions, to have rendered these unnecessary. The portico was hexastyle, and the square hall behind it consequently provided with thirty-six columns. Two of the side chambers were so large that their ceilings required the support of four columns.
Of still greater dimensions, more than eight times the area of the Palace of Darius, was the Palace Hall of Xerxes (D, E, F, G) which was preceded by a magnificent double flight of steps. The ceiling of the imposing hypostyle was upheld by thirty-six columns of gigantic size. There are no traces of chambers having been connected with it; three of its sides were provided with hexastyle porticos, which masked and artistically enlivened the dead enclosing-walls. The masonry has disappeared, with the exception of unimportant remains of the portal (G), which Coste has restored as the foundations of pedestals. Although a similar ruin at Susa, examined by Loftus, was also without walls, it is impossible to agree with Coste that these were originally altogether lacking, and that the columns of the central space were unenclosed—that the three portals, provided with separate roofs, were grouped around this without any connection. While we agree with Fergusson in as far as regards the completion of the wall line and the unity of the whole under a common roof, we must yet discredit his further assumption that this building was provided, like the Palace of Darius, with an upper story; all the requisite conditions for this were lacking. The ruin is remarkable from the remains of the colossal columns being in the comparatively best state of preservation. They represent the three orders described above: those of the western portico having the double-headed bull; those of the eastern the double-headed lion, and the others the form of shaft coronation combined of three or four members. The destination of this building was not that of a dwelling, but, without doubt, that of a festive hall for the audiences and ceremonies of the vainest and most magnificent of despotic monarchs. To this end it was fittingly placed next to the entrance-gate of the palace terrace. It is one of the most enormous buildings of the world; the area covered by its plan, about 10,500 sq. m., nearly equals that of the Cathedral of Milan, and surpasses that of the Cologne cathedral by about 2350 sq. m.
The imposing portal next to it, B, proved by inscriptions to have also been erected by Xerxes, remains upright in the grand masses shown by Fig. 88. An adequate explanation of its nature is not possible. It is only clear that its principal disposition, like that of the similar portal, H, of the terrace, was determined by the intersection of passages, the crossing being marked by four columns, while the parallel walls were of sculptured marble blocks. In a former work upon the history of ancient architecture,[F] the author has expressed the supposition that side walls were built in the directions marked by dotted lines upon the topographical plan (Fig. 78), connecting the portal with the ascending staircase. The gate would thus receive the character of a fortification, a termination of the palace terrace, instead of being the useless structure, easily to be circumvented, which it is commonly considered. It is probable that these side walls existed also at the chief portals of the Assyrian palaces, as otherwise the entrances, especially that of the harem, would have been too much exposed. These masses of masonry have disappeared from the ruins of Nineveh, because of the crumbling of the terrace borders, and in Persepolis, where all walls have been overthrown and carried away, their extent is not marked by the more durable door and window frames, which alone remain of the palace enclosures.
The assumption of similar communicating walls in connection with the other portal structures of the palace terrace (H and Q) not only renders to these their full importance, but throws light upon a building of enormous extent (C), the destination of which has hitherto been problematical. This edifice has been called, in lack of a better name, the Hall of a Hundred Columns. It is an extended enclosure of square plan, within which stood columns, traceable by the remains of six of their number. Upon the front was a portico, not decastyle, like the interior, but octastyle; two bases remaining in situ determine its arrangement and dimensions. The columns may be calculated, from their lower diameter, to have been about 7 m. high. The enclosure of the hall, determined in extent by the remains of all the portals and niches, measured 68 m. upon each side. According to general acceptance, the building was restricted to the area now covered by its ruins, and served as a second great hall for ceremonies. Fergusson terms it a coronation hall. But, apart from the fact that the Hall of Xerxes must have been far better fitted by its imposing proportions for such a purpose than this low and broad space, where the forest of columns would have impeded the view, it is hardly possible that two such extensive buildings would have been provided upon the terrace for the same use. But some adequate space is yet to be assigned to that important necessity of Oriental custom, the harem, which tradition particularly asserts to have existed among the Persian palaces. If the ruin is examined in its relation to the other palace structures of Persepolis, it becomes plain that it can be nothing else than the central hall of a similar, but more extended, series of chambers, of which, as is also the case with the ruined remains at O, hypostyle and portico have alone been preserved, while the walls of all the outer rooms have disappeared. Only the doors and windows of any wall upon the terrace now exist; and as the entrances were naturally small and the openings for light high above the ground, in the enclosure of the harem, it is not surprising that this masonry has disappeared in almost its entire extent. Two principal portals, perhaps the only ones of the outermost walls, have been preserved, however, and mark the outline of the building. These are the gateways H and Q of the topographical plan: the first of these even shows some trace of the enclosing wall; it is the entrance from the palaces K, L, M, N, and O; the second probably led to an open court, to which access must have been allowed the fair prisoners. The space between the hypostyle and the exterior wall, indicated upon the plan by dotted lines, must have been occupied by the numerous small rooms which provided dwellings for the three hundred girls of the harem. The low and broad central hall served as a place of assemblage; the great number of its columns and the excessive lowness of the ceiling exclude the idea of its having been used for public ceremonies, but render it particularly fitted for this purpose, the many shafts separating the groups of intimate conversers. The dim twilight of the room was, at these evening assemblies, enlivened by the many-colored lamps of the East. The harem upon the terrace thus received a development analogous to that of the royal dwellings, and its necessarily great extent was provided for in a becoming place. By the assumption that the remains at P are those of the harem, an integral part of the Oriental palace is recognized, and a large tract of the terrace area is occupied, the use of which could not otherwise be designated upon the topographical plan.
The disposition of the terrace under Darius appears to have differed considerably from that under his successors. It is not known whether its extent has since been increased; to establish this point, extensive excavations would be required. It is probable that the northwestern side of the plateau has been built out by adding earth to the natural rock; the buildings upon the southern half appear the more primitive: it is certain, however, that the position of the ascent was changed during the great reconstruction completed by Xerxes, and possibly commenced during the latter part of the reign of Darius. The orientation of the Palace of Darius, which, of all the buildings at Persepolis, alone faces the south, shows the great staircase to have been originally upon the southern end of the terrace. Enormous dowelled blocks of stone assured the stability and preservation of the newer parts of the substructure. The broad and gently rising flights of steps remain in so good a condition that it is even to-day possible to ascend them upon horseback.