'Fortified Cities' in the Bible

Her palaces will be overgrown with thorns;her fortified cities, with thistles and briers.She will become a dwelling for jackals,an abode for ostriches.

In the fourteenth year of King Hezekiah, Sennacherib king of Assyria attacked all the fortified cities of Judah and captured them.

Have you not heard?I designed it long ago;I planned it in days gone by.I have now brought it to pass,and you have crushed fortified citiesinto piles of rubble.