▁The ▁B irk irk ara ▁Tower ▁( ), ▁also ▁known ▁as ▁G ħ ar ▁il - Ġ ob on ▁Tower ▁( ), ▁is ▁a ▁tower ▁in ▁B irk irk ara , ▁Mal ta . ▁Its ▁date ▁of ▁construction ▁is ▁not ▁known , ▁but ▁it ▁is ▁believed ▁to ▁date ▁back ▁to ▁around ▁the ▁mid ▁or ▁late ▁ 1 6 th ▁century . ▁ ▁History ▁ ▁The ▁tower ▁was ▁built ▁for ▁def ensive ▁purposes ▁in ▁the ▁in land ▁areas ▁of ▁Mal ta ▁in ▁the ▁early ▁periods ▁of ▁the ▁Order ▁of ▁St . ▁John . ▁In ▁the ▁ 1 7 th ▁century ▁the ▁tower ▁was ▁a ided ▁with ▁the ▁building ▁of ▁another ▁tower , ▁the ▁Tal - We j ter ▁Tower , ▁to ▁better ▁facil itate ▁communication ▁with ▁Flor iana . ▁ ▁The ▁tower ▁was ▁included ▁on ▁the ▁Anti qu ities ▁List ▁of ▁ 1 9 2 5 . ▁It ▁is ▁now ▁scheduled ▁as ▁a ▁Gra de ▁ 1 ▁national ▁monument ▁by ▁the ▁Mal ta ▁Environment ▁and ▁Pl anning ▁Author ity , ▁and ▁it ▁is ▁also ▁listed ▁on ▁the ▁National ▁In ventory ▁of ▁the ▁Cultural ▁Property ▁of ▁the ▁M alt ese ▁Islands . ▁ ▁Architecture ▁ ▁B irk irk ara ▁Tower ▁has ▁a ▁square ▁plan , ▁and ▁its ▁roof ▁is ▁surrounded ▁by ▁a ▁high ▁par ap et ▁wall . ▁The ▁latter ▁contains ▁six ▁box ▁mach icol ations ; ▁a ▁pair ▁at ▁the ▁left - side ▁and ▁two ▁on ▁the ▁right - side , ▁and ▁one ▁each ▁at ▁the ▁front ▁and ▁back . ▁ ▁See ▁also ▁Tal