The History of Antiquity: Vol. II (of VI)

"[...]on the bank of the Tigris, [4] in the form of an oblong, and surrounded it with strong fortifications. The two longer sides measured 150 stades each, the two shorter sides 90 stades each, so that the whole circuit was 480 stades. The walls reached a height of 100 feet, and were so thick that there was room in the gangway for three chariots to pass each other. These walls were surmounted by 1500 towers, each of the height of 200 feet. As to the inhabitants of the city, the greater number and those of the most importance were Assyrians, but from the other nations also any who chose could fix his dwelling here, and Ninus allotted to the settlers large portions of the surrounding territory, and called the city Ninus, after his own name[...].