Verses with the word fortresses in the Old Testament (2 verses):

Isaiah 34:13
And thorns shall come up in her palaces, nettles and brambles in the fortresses thereof: and it shall be an habitation of dragons, and a court for owls.

Hosea 10:14
Therefore shall a tumult arise among thy people, and all thy fortresses shall be spoiled, as Shalman spoiled Betharbel in the day of battle: the mother was dashed in pieces upon her children.