Al-Masjid an-Nabawī (Arabic: ٱلْمَسْجِدُ ٱلنَّبَويّ, lit. 'Prophet's Mosque') is a mosque established and originally built by the Islamic prophet Muhammad, situated in the city of Medina in Saudi Arabia. Al-Masjid an-Nabawi was the third mosque built in the history of Islam[a] and is now one of the largest mosques in the world. It is the second-holiest site in Islam, after Masjid al-Haram in Makkah. One of the most notable features of the site is the Green Dome in the south-east corner of the mosque,[11] originally Aisha's house,[10] where the tomb of Muhammad is located. In 1279, a wooden cupola was built over the tomb which was later rebuilt and renovated multiple times in late 15th century and once in 1817. The current dome was added in 1818 by the Ottoman sultan Mahmud II,[11] and it was first painted green in 1837, hence becoming known as the "Green Dome".