Towers: Frequently Strong and Well Fortified
Source: TTT
Judges 9:51
But there was a strong tower inside the city, and all the men, women, and leaders of the city fled there. They locked themselves in and went up to the roof of the tower.
2 Chronicles 26:9
Uzziah built towers in Jerusalem at the Corner Gate, the Valley Gate, and the angle in the wall, and he fortified them.