books.google.tn - Throughout history, great faiths have been subjected to persecution and attack from beyond the wall - literally walls, in Peter Harrison's remarkable book of the great monastery-fortresses, and church-fortresses, of the world.The fortified religious buildings of Christendom, Islam and Tibetan Buddhism...http://books.google.tn/books/about/Castles_of_God.html?hl=ar&id=g6PqNavNEdgC&utm_source=gb-gplus-shareCastles of God
