The bloody crusades that swept across the Middle East in medieval times left their mark on the landscape, where fortifications which once acted as bastions of power for the beleaguered Crusader States now cast their ruined shadows over the earth. These fortifications varied considerably in size, architecture and function from the mighty Crac de Chevaliers, the headquarters of the Knights Hospitaller in Syria to smaller fortified dwellings and religious centers. With almost constant warfare between Crusaders and Saracens they were vitally important both as centers of defense and bases for the launch of offensive operations. Citadels of Christendom is a beautifully illustrated guide to the development, construction, purpose and history of these castles. Examining the castles built in the Holy Land between 1097 and 1302 as well as the castles built in Cyprus, Greece and the Aegean between 1191 and 1571, this book provides a rare overview of the history and notably the evolution of fortresses and defenses during the Crusades. Contemporary photographs and the latest research resurrect these imposing reminders of over two centuries of conflict.