what is the significance of the mosque that is mentioned in the previous answer?
It is the third holiest site in Islam.  Muslims believe that Muhammad was transported from the Great Mosque of Mecca to al-Aqsa during the Night Journey.
Al-Aqsa Mosque
Al-Aqsa Mosque (, , "the Farthest Mosque"), located in the Old City of Jerusalem, is the third holiest site in Islam. The mosque was built on top of the Temple Mount, known as the Al Aqsa Compound or Haram esh-Sharif in Islam. Muslims believe that Muhammad was transported from the Great Mosque of Mecca to al-Aqsa during the Night Journey. Islamic tradition holds that Muhammad led prayers towards this site until the 17th month after his migration from Mecca to Medina, when Allah directed him to turn towards the Kaaba in Mecca.
the distance between the western wall and the dome of the rock is approximately UNANSWERABLE what is the significance of this wall? It is the holiest place where Jews are permitted to pray and the Foundation Stone - the most sacred site in the Jewish faith - lies behind it. For Muslims, it constitutes the eastern border of "al-Haram al-Sharif", the Noble Sanctuary of the Al-Aqsa Mosque. what are the other different names it has? It was called as "Wailing Wall" in nineteenth century English Literature. The name "Mur des Lamentations" was used in French and "Klagemauer" in German. The Arabs referred to the wall as the al-Buraq Wall.
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Al-Aqsa Mosque [SEP] Introduction
Al-Aqsa Mosque (, , "the Farthest Mosque"), located in the Old City of Jerusalem, is the third holiest site in Islam. The mosque was built on top of the Temple Mount, known as the Al Aqsa Compound or Haram esh-Sharif in Islam. Muslims believe that Muhammad was transported from the Great Mosque of Mecca to al-Aqsa during the Night Journey. Islamic tradition holds that Muhammad led prayers towards this site until the 17th month after his migration from Mecca to Medina, when Allah directed him to turn towards the Kaaba in Mecca. The covered mosque building was originally a small prayer house erected by Umar, the second caliph of the Rashidun Caliphate, but was rebuilt and expanded by the Umayyad caliph Abd al-Malik and finished by his son al-Walid in 705 CE.