Archaeologists using renovation of ancient citadel to study bastion's medieval past in hope of learning more about the holy city during the Crusades

Remnants of the Middle Ages' Kingdom of Jerusalem, including fortresses, citadels and battle sites, still dot the country and are open to visitors

From Roman art mocking Christian faith to ornate depictions of triumph over sin and death to emblem of Crusades or racism, the symbol of Christ's crucifixion has a varied history

920 years ago, Crusaders breached Jerusalem and conquered the walled Fatimid city. Now the Mount Zion Project has found a chronicled moat that to many scholars had seemed like myth