Solomon strengthened the supporting terraces on a slope of the southeastern ridge in the traditional City of David area of Jerusalem (see 2 Samuel 5:9) and the wall of Jerusalem. He also fortified the important cities of Hazor, Megiddo, and Gezer.
Archaeological research shows that the walls and gates of all three cities have unique features from Solomon’s time. Hazor, in the north, served as a first line of defense against invasion. Megiddo, in the Plain of Sharon, also had important military significance (2 Kings 23:29–30; Revelation 16:12–16).