 The restorations have significantly changed the buildings from their prior state . Helwan marble has been used extensively on both interior and exterior surfaces , and inscriptions in the interior have been gilded . Motifs and designs have been copied from one mosque to another . The qibla bay of the al @-@ Hakim mosque , which had been irreparably damaged , was replaced by a version in marble and gilt of the mihrab of al @-@ Azhar mosque . The Lu 'lu 'a Mosque , formerly a ruin , has been rebuilt as a three @-@ story building somewhat like Bab al @-@ Nasr , with decorative elements from al @-@ Aqmar and al @-@ Hakim . Silver and gold grilles now enclose tombs in mosques and mausoleums . Arches , particularly in groups of three , are considered " Fatimid " , regardless of their shape . The result is what could be termed " Neo @-@ Fatimid " architecture , now found in new Bohra mosques around the world . The Aga Sir Sultan Muhammad Shah , leader of the Ismaili sect , was buried in 1957 in a mausoleum built in this neo @-@ Fatimid style . In some cases this style incorporates elements that are clearly from a different period . All but one of the Fatimid minarets were destroyed by an earthquake in 1303 , and later rebuilt by the Mamluks , but replicas of these minarets are used in Neo @-@ Fatimid mosques . 
