Centuries before and after Dante's composition of the Commedia, European pilgrims on the greatest journey of their lives sailed to Egypt, retraced the path of the Exodus to Jerusalem, and then voyaged to the eternal city of Rome. Their travels carried them to remote regions beyond the sphere of Latin culture; consequently, a full knowledge of their once-famous pilgrimage has been lost to Dante scholarship. Here for the first time is a richly documented account of how that great circle pilgrimage served, in the Roman Church's first Jubilee Pilgrimage Year of 1300, as the figural model for...