Ka kammala wannan furcin: Aƙalla tun ƙarni na 11 ne ƙofa mai wannan sunan ta kasance a wannan ɓangaren ganuwar birnin. An ambaci wannan ƙofar ne bayan wani sarkin Zenata, 'Ajisa, wanda ya mamaye garin farko na "al-'Aliya" (a cikin yankin Qarawiyyin na Fes), a cikin kishiya da ɗan'uwansa, el-Fetouh, wanda ya mamaye garin "Madinat Fas" (yanzu yankin Andalus) a gefen kogin kuma wanda wataƙila ya ba da sunansa ga wata ƙofa, Bab Ftouh. 'Yan'uwan biyu sun kasance a cikin iko tsakanin 1059 da 1061 kuma duka suna da alhakin gina waɗannan ƙofofin, ma'ana dole ne a gina Bab Guissa a waɗannan shekarun. Ba da daɗewa ba bayan haka, biranen biyu sun haɗu gaba ɗaya cikin birni ɗaya tare da ganuwar bango guda ɗaya ta Almoravids, waɗanda suka ci birnin a 1069. Wadannan ganuwar sun lalace a cikin 1145 ta hanyar mai cin nasara na Almohad Abd al-Mu'min sannan kuma daya daga cikin magajinsa, Muhammad al-Nasir, ya sake gina shi a cikin 1212. An yi imanin cewa kofar ta yanzu ta fito ne daga ginin Muhammad al-Nasir, wanda ya sa ta zama ɗaya daga cikin tsoffin ƙofofin da aka kiyaye a cikin birni tare da Bab Mahrouk (kuma daga lokaci ɗaya). Koyaya, bayan Almohads, sarkin Marinid Abu Yusuf Ya'qub ya dawo da ƙofar a ƙarni na 13 kuma an gyara ko sake gina ta a ƙarni na 18 bayan halakar masarautar.
1755 girgizar kasa.