what is the wall in a mosque called that is toward mecca
Mihrab Mihrab (Arabic: محراب‎‎ miḥrāb, pl. محاريب maḥārīb) is a semicircular niche in the wall of a mosque that indicates the qibla; that is, the direction of the Kaaba in Mecca and hence the direction that Muslims should face when praying. The wall in which a mihrab appears is thus the "qibla wall".
Western Wall In a broader sense, "Western Wall" can refer to the entire 488-metre-long (1,601 ft) retaining wall on the western side of the Temple Mount. The classic portion now faces a large plaza in the Jewish Quarter, near the southwestern corner of the Temple Mount, while the rest of the wall is concealed behind structures in the Muslim Quarter, with the small exception of a 25 ft (8 m) section, the so-called Little Western Wall. The segment of the Western retaining wall traditionally used for Jewish liturgy, known as the "Western Wall", derives its particular importance to it having never been fully obscured by medieval buildings, and displaying much more of the original Herodian stonework than the "Little Western Wall". In religious terms, the "Little Western Wall" is presumed to be even closer to the Holy of Holies and thus to the "presence of God" (Shechina), and the underground Warren's Gate, which has been out of reach since the 12th century, even more so.