باب زويلة
In the 1080s, to protect the city from possible Seljuk attack, Badr ordered the refortification of Cairo. The old mud brick walls, built when Cairo had been founded in the 970s, were entirely replaced by a new stone fortification, supervised by builders from northern Syria. Three of the gates of Badr's city wall still stand to this day (Bab al-Futuh, Bab al-Nasr, and Bab Zuweila), as well as a section of the northern city wall. He also built the Juyushi Mosque on the Muqattam Hill, in memory of his son Awhad, who rebelled in Alexandria and was killed in 1085. Among the most notable surviving wood art objects from the Fatimid period is also the "minbar" commissioned by Badr for the shrine of the head of Husayn ibn Ali in Ascalon (now located at the Ibrahimi Mosque in Hebron; see Minbar of the Ibrahimi Mosque).