what is about its transformation into worship area?
That part of the wall faces a large plaza and is set aside for prayer.
Western Wall
The term Western Wall commonly refers to a exposed section of a much longer retaining wall, built by Herod on the western flank of the Temple Mount. Only when used in this sense is it synonymous with the term Wailing Wall. This section faces a large plaza and is set aside for prayer.

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. 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. where is it located? The Old City of Jerusalem who constructed it? Either Umar ibn al-Khattab, the second caliph of the Rashidun Caliphate or Mu'awiyah. in the wall mentioned in the beginning is there a separate section for prayer? Yes, the prayer section is a part of a much longer wall. are there many other section in this wall? Two other revealed sections are its southern part and another short section known as the Little Western Wall. arethere any section that are not revealed? Most parts of the western retaining wall of the Herodian Temple Mount complex is hidden behind medieval residential structures built along its length.
wiki:13498019
Western Wall [SEP] Prayer section vs. entire wall
The term Western Wall commonly refers to a exposed section of a much longer retaining wall, built by Herod on the western flank of the Temple Mount. Only when used in this sense is it synonymous with the term Wailing Wall. This section faces a large plaza and is set aside for prayer. In its entirety, the western retaining wall of the Herodian Temple Mount complex stretches for , most of which is hidden behind medieval residential structures built along its length. There are only two other revealed sections: the southern part of the Wall (see Robinson's Arch area), which measures approximately , and is separated from the prayer area by just a narrow stretch of archaeological remains; and another, much shorter section, known as the Little Western Wall, which is located close to the Iron Gate.