 Prosperity ended in 1100 or 1101 , when Haifa was besieged and blockaded by the Crusaders and then conquered after a fierce battle with its Jewish inhabitants and Fatimid garrison . Under the Crusaders , Haifa was reduced to a small fortified coastal stronghold . It was a part of the Principality of Galilee within the Kingdom of Jerusalem . Following their victory at the Battle of Hattin , Saladin 's Ayyubid army captured Haifa in mid @-@ July 1187 and the city 's Crusader fortress was destroyed . The Crusaders under Richard the Lionheart retook Haifa in 1191 . 
 Prosperity ended in 1100 or 1101 , when Haifa was besieged and blockaded by the Crusaders and then conquered after a fierce battle with its Jewish inhabitants and Fatimid garrison . Under the Crusaders , Haifa was reduced to a small fortified coastal stronghold . It was a part of the Principality of Galilee within the Kingdom of Jerusalem . Following their victory at the Battle of Hattin , Saladin <a href='null_genetive' title='1'><mark>'s</mark></a>Ayyubid army<a href='been_done' title='2'><mark></mark></a> captured Haifa in mid @-@ July 1187 and the city <a href='null_genetive' title='3'><mark>'s</mark></a>Crusader fortress was destroyed . The Crusaders under Richard the Lionheart retook Haifa in 1191 . 
Prosperity ended in 1100 or 1101 , when Haifa was besieged and blockaded by da Crusaders and then conquered after a fierce battle wit its Jewish inhabitants and Fatimid garrison . Under tdaCrusaders , Haifa was reduced to a small fortified coastal stronghold . It was a part of the Principality of Galilee within the Kingdom of Jerusalem . Following their victory at the Battle of Hattin , Saladin  Ayyubid army done captured Haifa in mid @-@ July 1187 and thdaity  Crusader fortress was destroyed . Thedausaders under Richard the Lionheart retook Haifa in 1191 .