'Fortified Cities' in the Bible

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

Hast thou not heard - that, long ago, that, is what I appointed, and, from days of old, devised it? Now, have I brought it to pass, that thou mightest serve to lay waste, in desolate ruins, fortified cities;