View looking south at the massive tower located just inside (east) of Jaffa Gate.
Note the three portions of the tower. The lower portion is on an incline – rising out of a dry moat. The upper portion (the portion with the windows) is from the days of Suleiman the Magnificent. The middle portion – in the center of the image just below the windows is probably Herodian.
According to the Jewish historian Josephus, Herod the Great (37-4 B.C.) built three towers in this area. This middle portion is probably a remnant of one of the towers – either that of Hippicus or Phasael (named respectively after a friend and a brother of Herod).
The Jaffa Gate itself is about 200 ft. [180 m.] to the right (west) of this spot.
This image courtesy of Jerry Hawkes.