Mosque of al-Zahir Baybars is a mosque from the Mamluk era and one of the largest mosques in Cairo, Egypt. The mosque was built in 1268 AD by al-Zahir Baybars, the fourth Mamluk sultan of Egypt from the Bahri dynasty. The mosque was neglected over the years and turned into a warehouse in the Ottoman era and a military barracks in the French period, and then into a bakery and garden in subsequent years. The mosque was damaged and some of its parts were destroyed until its restoration began in 2007. After several pauses in the restoration work, work resumed in 2018 and is still ongoing.