The principal halls were immediately within the two chief entrances one on the north-east, the other on the opposite or south-west front of the palace.
Neither of these two rooms has been completely explored: but the one appears to have been more than 150 and the other was probably 180 feet in length, while the width of each was a little more than 40 feet.
Besides these two great halls and the grand gallery already described, the palace contained about twenty rooms of a considerable size, and at least forty or fifty smaller chambers, mostly square, or nearly so, opening out of some hall or large apartment.

The actual number of the rooms explored is about sixty; but as in many parts the examination of the building is still incomplete, we may fairly conjecture that the entire number was not less than seventy or eighty.
The palace of Sennacherib preserved all the main features of Assyrian architecture.

It was elevated on a platform, eighty or ninety feet above the plain, artificially constructed, and covered with a pavement of bricks.

It had probably three grand facades--one on the north-east, where it was ordinarily approached from the town, and the two others on the south-east and the south-west, where it was carried nearly to the edge of the platform, and overhung the two streams of the Khosr-su and the Tigris.

Its principal apartment was that which was first entered by the visitor.