The Pilgrim's Progress from This World to That Which Is to Come; Delivered under the Similitude of a Dream is a 1678 Christian allegory written by John Bunyan. It is regarded as one of the most significant works of religious English literature, has been translated into more than 200 languages, and has never been out of print. The protagonist is an everyman character, and the plot centers on his journey from his hometown, the 'City of Destruction' ('this world'), to the 'Celestial City' ('that which is to come': Heaven). Christian is weighed down by a great burden—the knowledge of his sin—which he believed came from his reading 'the book in his hand' (the Bible). Christian finally reaches the 'place of deliverance' (allegorically, the cross of Calvary and the open sepulcher of Christ), where the 'straps' that bound Christian's burden to him break, and it rolls away into the open sepulcher. The rest follows his adventures through life until he reaches heaven.