The Walls of Jerusalem
Jerusalem was also surrounded by massive walls.
Ps 51:18 "Do good in Your good pleasure to Zion; Build the walls of Jerusalem."
David’s prayer was answered when his son Solomon build the wall of Jerusalem around the city, and repaired the breaches of the city of David. He also built the Millo (rampart), a fortification which apparently existed when it was inhabited by the Jebusites as with King Hezekiah:
2 Chron 32:4-5 "And he strengthened himself, built up all the wall that was broken, raised it up to the towers, and built another wall outside; also he repaired the Millo in the City of David, and made weapons and shields in abundance."
King Manasseh, after he repented built a wall around the city of David, on the west side of Gihon:
2 Chron 33:13-15 "Then Manasseh knew that the LORD was God. After this he built a wall outside the City of David on the west side of Gihon, in the valley, as far as the entrance of the Fish Gate; and it enclosed Ophel, and he raised it to a very great height. Then he put military captains in all the fortified cities of Judah.
Also Nehemiah, after the Babylonian captivity, brought helpers including "Shallum and his daughters," and repaired the broken down walls of Jerusalem by "putting their necks to the work of the Lord."
By the time of Jesus, according to Josephus, there were three walls that surrounded Jerusalem, "90 towers stood in the first wall, 14 in the second, and 60 in the third." The third wall was built by Herod Agrippa I.
Click around the map to learn more about the walls, the towers, and fortifications.