'Fortified Cities' in the Bible

Thorns will come up in its fortified towers,Nettles and thistles in its fortified cities;It will also be a haunt of jackalsAnd an abode of ostriches.

Now in the fourteenth year of King Hezekiah, Sennacherib king of Assyria came up against all the fortified cities of Judah and seized them.

“Have you not heard?Long ago I did it,From ancient times I planned it.Now I have brought it to pass,That you should turn fortified cities into ruinous heaps.