Modern Jerusalem does not occupy the whole of the space covered by the ancient city in the days of Herod; the greater part of Mount Sion (to the south) being excluded, as it has been since the time when Hadrian rebuilt the city under the name of _Ælia Capitolina_. The agreement between the descriptions of the town, given by William of Tyre, James of Vitri, Brocardus and many others in the middle ages, and those of modern writers, shews that its limits have not since undergone any changes. The wall, which now surrounds the city, was built from the foundations at that time, and only restored in some parts by order of Sultan Solyman the Magnificent, son of Selim I. in 1534, as declared by the inscriptions over the gates[23]. This wall is not of uniform height, but varies from thirty-six to forty-two feet. Its thickness also varies in different parts, from four to five and five and a half feet. The whole wall is crowned by battlements, and makes a great number of angles; of these there are more on the south than on the north; while on the east it forms nearly a straight line, and on the west, two segments, meeting in a very obtuse angle at the Jaffa gate. Here rise some towers[24], and the old fortress, called the Castle of David[25]. This constitutes the feeble nucleus of the fortification of the city, and is of no importance whatever in the present state of military science. The form of the city is an irregular trapezium, the longest side of which is the north, the next the south; the east is shorter than either of the former, the west the shortest of all. The walls contain eleven gateways[26], five of which are closed up. 1st. On the north, the gate of Damascus, called by the Arabs _Bâb-el-'Amud_, or The Gate of the Column[27]. Through this is the road to the ancient land of Ephraim, and so to Nablûs and Damascus. It is also the gate of honour by which all the Mohammedan authorities who arrive as governors or as visitors to the Holy City make their first entry. This gate is better built than any of the others, and presents a fine appearance; its Saracenic architecture is magnificent; the few arabesques and ornaments are of excellent workmanship. Inside, on the right-hand wall on entering, is a Cufic inscription. 2nd. Proceeding eastwards, about 780 feet from the gate just described, is the gate, commonly called that of Herod, which has been walled up for some few years, to save the expense of a guard. The Arabs call it _Bâb-ez-Zaheri_, which some translate as Gate of Gardens. Close to this gate is a small reservoir, called the Pilgrim's Pool, in memory of a maiden who made a vow to walk to Jerusalem barefoot and fasting, and died of exhaustion on reaching this spot.