The Green Dome (al-Qubbah al-Khaḍrāʾ) is a green-coloured dome built above the tombs of the Islamic prophet Muhammad and the early Rashidun Caliphs Abu Bakr (632-634) and Umar (634-644), which used to be Aisha's chamber. The dome is located in the southeast corner of Al-Masjid al-Nabawi ("mosque of the Prophet") in Medina, Saudi Arabia. Millions visit it every year, since it is a tradition to visit the mosque after or before the pilgrimage to Mecca.
The structure dates back to 1279 C.E., when an unpainted wooden cupola was built over the tomb. It was later rebuilt and painted using different colours twice in the late 15th century and once in 1817. The dome was first painted green in 1837, and hence became known as the "Green Dome".
Built in 1279 C.E. or 678 A.H., during the reign of Mamluk Sultan Al Mansur Qalawun, the original structure was made out of wood and was colourless, painted white and blue in later restorations. After a serious fire struck the Mosque in 1481, the mosque and dome had been burnt and a restoration project was initiated by Sultan Qaitbay who had most of the wooden base replaced by a brick structure in order to prevent the collapse of the dome in the future, and used plates of lead to cover the new wooden dome. The building, including the Tomb of the Prophet, was extensively renewed through Qaitbay's patronage. The current dome was added in 1818 by the Ottoman Sultan Mahmud II. The dome was first painted green in 1837.
When Saud bin Abdul-Aziz took Medina in 1805, his followers, the Wahhabis, demolished nearly every tomb dome in Medina based on their belief that the veneration of tombs and places claimed to possess supernatural powers is an offense against tawhid. The tomb was stripped of its gold and jewel ornaments, but the dome was preserved either because of an unsuccessful attempt to demolish its hardened structure, or because some time ago Ibn Abd al-Wahhab wrote that he did not wish to see the dome destroyed despite his aversion to people praying at the tomb.