Bible Verses About Towers: On the walls of cities

And he said to Juda: Let us build these cities, and compass them with walls, and fortify them with towers, and gates, and bars, while all is quiet from wars, because we have sought the Lord the God of our fathers, and he hath given us peace round about. So they built, and there was no hinderance in building.

And Ozias built towers in Jerusalem over the gate of the corner, and over the gate of the valley, and the rest, in the same side of the wall, and fortified them.