The Western Wall (, often shortened to the Kotel or Kosel), known in the West as the Wailing Wall, and in Islam as the Buraq Wall (Arabic: حَائِط ٱلْبُرَاق, Ḥā'iṭ al-Burāq ), is a portion of ancient limestone wall in the Old City of Jerusalem that forms part of the larger retaining wall of the hill known to Jews and Christians as the Temple Mount. Just over half the wall's total height, including its 17 courses located below street level, dates from the end of the Second Temple period, and is believed to have been begun by Herod the Great. The very large stone blocks of the lower courses are Herodian, the courses of medium-sized stones above them were added during the Umayyad period, while the small stones of the uppermost courses are of more recent date, especially from the Ottoman period. The Western Wall plays an important role in Judaism due to its proximity to the Temple Mount. Because of the Temple Mount entry restrictions, the Wall is the holiest place where Jews are permitted to pray outside the previous Temple Mount platform, as the presumed site of the Holy of Holies, the most sacred site in the Jewish faith, lies just behind it. The original, natural, and irregular-shaped Temple Mount was gradually extended to allow for an ever-larger Temple compound to be built at its top. The earliest source mentioning this specific site as a place of Jewish worship is from the 17th century. It also has a place in Muslim tradition, in which it is believed to be the site where the Islamic Prophet Muhammad tied his winged steed, al-Buraq, on his Isra and Mi'raj to Jerusalem before ascending to paradise, and constitutes the western border of al-Haram al-Sharif ("the Noble Sanctuary"), or the Al-Aqsa compound. The term Western Wall and its variations are mostly used in a narrow sense for the section of the wall used for Jewish prayer and called the "Wailing Wall", referring to the practice of Jews weeping at the site. During the period of Christian Roman rule over Jerusalem (ca. 324–638), Jews were completely barred from Jerusalem except on Tisha B'Av, the day of national mourning for the Temples. The term "Wailing Wall" has historically been used mainly by Christians, with religious Jews generally considering it derogatory. In a broader sense, "Western Wall" can refer to the entire retaining wall on the