VIDEO: Detailed visit into the Prophet’s Mihrab

The Mihrab is, as mentioned in Wikipedia, 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".

The Mihrab is a piece of art with its beautiful calligraphy and it is situated closest to the Holy Chamber and opposite it, the Imam  leads prayers.