 Early Fatimid mosques such as the mosque of the Qarafa did not have a minaret . Later mosques built in Egypt and in Ifriqiya incorporated brick minarets , which were probably part of their original designs . These were derived from early Abbasid forms of minaret . Minarets later evolved to the characteristic mabkhara ( incense burner ) shape , where a lower rectangular shaft supported an octagon section that was capped by a ribbed helmet . Almost all of Cairo 's Fatimid minarets were destroyed by an earthquake in 1303 . 
