It’s southeast the Dome of the Rock. Some say it was built during the Ottoman era; others say it was in the Umayyad era, and others say it was built during the Fatimid period. It was renovated in the Ottoman era, in 1315/1898 AD.
It’s a small dome carried on four pillars. Below it is a stone basin called Mahd Issa. It was probably there in the Abbasid or the Fatimid eras, in front of it is a stone niche. It is said that Jesus Christ the son of Mary, peace and blessings of Allah be upon them, slept in this place when he was a young child, and this is something unproven until now and not believed by the Christians, as they did not give the place any attention before the Islamic conquest.
It’s a memorial building inside Al-Aqsa Mosque. Researchers confirm that the mihrab or Mahd Issa is originally the compartment of the Caliph, and is a room of a large house fortified with walls of elements of the mosque near the mihrab. The Fatimid’s made this mihrab and this cabin for worship, and they called it Mahd Issa mosque. It was built mostly in the Fatimid period, to commemorate the birth of the Prophet Jesus. The oldest mentioning of the site was for the traveler Nasir Khusraw, in (413 AH / 1047 AD).
It’s a rectangular room, 7.4 m × 4.4 m, below the level of the mosque in about 6 meters. Can be descended to by a staircase, and entered through a small gate above the surface of the Marwani chapel. The entrance was the only one for the Marwani chapel before its restoration and the opening of additional gates. Inside the room is a ground niche, 1.6 × 1 m, called the cradle of Issa, above the mihrab there is an ornate dome and three niches in the tribal area Ayyubid, Mamluk and Ottoman eras.