The Crusaders undertook an extensive building programme , giving the castle much of its current appearance .
Early in the 12th century the Franks assumed control of the site and it was part of the newly formed Crusader state of the Principality of Antioch .
The Crusader undertook an extensive building programme , giving the castle much of Crusader 's current appearance .
Early in the 12th century the Franks assumed control of the site and it was part of the newly formed Crusader state of the Principality of Antioch .