, ▁which ▁once ▁hous ed ▁the ▁north ▁gate ▁of ▁the ▁cit adel , ▁and ▁the ▁south west ▁corner ▁tower ▁have ▁also ▁largely ▁disappeared . ▁Of ▁the ▁former , ▁only ▁the ▁west ▁wall ▁remains ▁while ▁of ▁the ▁south west ▁tower ▁only ▁parts ▁of ▁the ▁bas ement ▁can ▁still ▁be ▁seen . ▁The ▁other ▁ 1 0 ▁to wers ▁have ▁been ▁preserved ▁up ▁to ▁their ▁original ▁height , ▁which ▁ranges ▁between ▁. ▁The ▁northern ▁corner ▁to wers ▁are ▁square ▁while ▁the ▁southern ▁ones ▁are ▁L - sh aped . ▁All ▁the ▁other ▁to wers ▁are ▁rect angular ▁with ▁their ▁broad ▁sides ▁parallel ▁to ▁the ▁walls ▁of ▁the ▁cit adel . ▁All ▁to wers ▁are ▁crown ed ▁by ▁a ▁double ▁par ap et ▁equ ipped ▁with ▁mach icol ations ▁and ▁numerous ▁arrow sl its . ▁These ▁par ap ets ▁surrounded ▁and ▁thereby ▁protected ▁the ▁large ▁platforms ▁from ▁which ▁tre buch ets ▁were ▁operated . ▁ ▁Cur tain ▁walls ▁The ▁cur tain ▁walls ▁of ▁the ▁cit adel ▁connect ▁the ▁to wers ▁with ▁each ▁other . ▁Given ▁that ▁during ▁the ▁design ▁of ▁the ▁cit adel ▁so ▁much ▁emphas is ▁was ▁placed ▁on ▁the ▁massive ▁to wers , ▁the ▁cur tain ▁walls ▁are ▁relatively ▁short . ▁They ▁range ▁between ▁ ▁in ▁length ▁for ▁the ▁cur tain ▁wall ▁that ▁connect s ▁the ▁two ▁central ▁to wers ▁of ▁the ▁east ▁wall ▁to ▁ ▁for ▁the ▁cur tain ▁wall ▁connecting ▁the ▁north west ▁corner ▁tower ▁with ▁the ▁next ▁tower ▁east ▁of ▁it . ▁Where ▁the ▁walls ▁are ▁preserved ▁up ▁to ▁their ▁original