stones of Jaffa Gate are large, hewn, sand-colored blocks. The entryway stands about high, and the wall rises another 20 feet above that. 1898 breach in the wall Adjacent to the old gate tower (the 1538 Jaffa Gate proper, which is used only by pedestrians), is a wide breach in the wall, through which the roadway passes. This breach is located between the gate tower and the citadel/Tower of David. Photographs from circa 1870 to 1890 show that originally the city wall was continuous at that point, although the wall segment between the citadel and the gate tower was much lower, owing to the fact that a moat ran around the citadel, and the city wall at that point was constructed from the bottom of the moat up. Therefore, even though the overall height of that wall segment was presumably the same as the rest of the city wall's, therefore providing a similar level of protection from invaders, the top of the wall segment only reached about two metres above the moat, a much lower elevation than both the adjacent city wall and citadel. The breach was made by the Ottoman authorities ahead of Emperor Wilhelm II of Germany's visit to the city and allowed him and his retinue to comfortably enter Jerusalem riding on horses and in carriages. Part of the moat also had to be filled in for the purpose. Associated structures The Citadel, aka the "Tower of David" The Tower of David is an ancient citadel located near the Jaffa Gate entrance to the Old City of Jerusalem. Built to strengthen a strategically weak point in the Old City's defenses, the citadel that stands today was constructed during the 2nd century BCE and subsequently destroyed and rebuilt by, in succession, the Christian, Muslim, Mamluk, and Ottoman conquerors of Jerusalem. The strong bulwarks still seen today surrounding the base of the tower are believed to have been built by king Herod, in memorial of his brother, and was formerly named the Tower of Phasael (). During the Jewish war with Rome, Simon bar Giora made the tower his place of residence. Of the original tower itself, some sixteen courses of the original stone ashlars can still be seen rising from ground level, upon which were added smaller stones in a later period, which added significantly to its height. The site contains important archaeological finds dating back 2,700 years,