The spacious terrace at the west has in its centre an oblong hall (N), generally supposed to be the temple or chapel of the palace, but which may with more probability be considered as a hall of state. The scanty remains of this structure make a sure determination of its purpose impossible. They consist chiefly of the foundations of solid unburnt brick masonry, faced with slabs of black basalt. The cornice of this substructure is of gray limestone, in form much resembling the characteristic scotia of Egyptian architecture. (Fig. 46.)

A small terraced pyramid (O) at the southwest is a more remarkable structure. Four of its steps, with their facing of white, black, orange, and blue enamelled tiles, are still remaining. These lead, from analogy with the pyramid of Borsippa, to the assumption of three further steps, tiled with the red, silver, and gold assigned to the remaining planets. The vertical panelling of the sides is somewhat similar to that of the remains at Warka; it is not here restricted to the walls of the lower terrace, like that upon the ruins of Mugheir and Borsippa. The square platform at the top of the terraces, the side of which could have measured little more than 10 m., received either an altar or a small cella, not longer than 6 m. Ascent to the top of the pyramid was provided by an inclined plane, which wound from step to step in a rectangular spiral. The destination of the pyramid as the palace chapel seems reasonably certain, from its similarity to other terraced temples of Assyria.

The palaces hitherto discovered show the greatest freedom of detailed arrangement. The variations among the plans may be illustrated by a comparison of those of the northwestern palace of Nimrud (Fig. 47), the palace of Esarhaddon (Fig. 49), and of that of Sennacherib at Coyundjic. The methods of construction adopted for their erection are more similar. All have walls built of burnt or unburnt brick and of stamped clay; those of the larger chambers are reveted in their lower half with slabs of alabaster or with brightly enamelled tiles, and ornamented by paintings upon stucco above. All the principal halls are so narrow in proportion to their length as to resemble corridors—a peculiarity arising from technical difficulties of ceiling.

The manner of lighting and roofing adopted in Assyrian palaces is not directly evident from the existing remains; none of the walls, the highest of which reaches 9 m. above the ground, showing traces of any window-like openings. Some authorities assume that all the light of the interior was admitted through the doors. That this may, in some instances, have been barely possible is evident from the plan of Sargon’s palace at Corsabad (Fig. 44), where the principal chambers were entered directly from the open courts, or, in exceptional instances, were preceded by narrow ante-rooms which could not greatly have interfered with the light. But it is plain from the plan of the northwestern Palace of Nimrud (Fig. 47) that twelve chambers in such unfavorable positions as those shown upon its eastern side could not have received the slightest light through the two narrow passages leading from the confined court. It is futile to deny the necessity of light and air for the dwellings of man; and theories which suppose these enormous spaces left in darkness, or unventilated and lighted artificially, are certainly untenable. Other scholars are of the opinion that light and air were procured through horizontal openings in the ceiling and roof; but this imperfect and unpractical arrangement is particularly ill adapted for inhabited rooms, and is rendered extremely improbable by the fact that upon the pavements there did not exist the slightest arrangement for leading off the water which must have fallen upon them had the roof been an inefficient shelter. The floors were rarely of stone slabs, like the carved fragments shown in Fig. 45, and in other places the sun-dried bricks would have been rapidly reduced to mud by the furious rain-storms of Mesopotamia.