The Great Mosque of Al-Zaytuna ("Mosque of Olive") is the oldest in the Capital of Tunisia and covers an area of with nine entrances. Its exact building date varies according to the sources. Ibn Khaldun and Al-Bakri wrote that it was built in 116 Hijri (731 AD) by Obeid-Allah Ibn Al-Habhab. However, Ahmed in Abu Diyaf and Ibn Abi Dinar attributed its foundation to Hasan ibn al-Nu'man, who led the conquest of Tunis and Carthage. Most scholars agree that the closest date is 84 Hijri (703 AD), and what Al-Habhab did was in fact enlarge the mosque and improve its architecture.