The remains of a watch tower on Citadel Hill , first attributed to the Crusaders , now are preferentially dated to the Ayyubid period , leaving it to further research to find the location of the Crusader castle .
By 1170 , Amman was in Ayyubid hands .
The remains of a watch tower on Citadel Hill , first attributed to the Crusaders , now are preferentially dated to the Ayyubid period , leaving Amman to further research to find the location of the Crusader castle .
By 1170 , Amman was in Ayyubid hands .