'Walls of Jerusalem' in the Bible

And I went out by night by the valley gate, even toward the jackal's well, and to the dung gate, and viewed the walls of Jerusalem, which were broken down, and the gates thereof were consumed with fire.

But it came to pass that, when Sanballat, and Tobiah, and the Arabians, and the Ammonites, and the Ashdodites, heard that the repairing of the walls of Jerusalem went forward, and that the breaches began to be stopped, then they were very wroth;