John Bunyan's The Pilgrim's Progress is a Christian allegory published in 1678. It tells the story of Christian, a man who embarks on a journey from his hometown, the City of Destruction, to the Celestial City, representing heaven. Along the way, he encounters various characters and challenges that symbolize different aspects of the Christian faith. The narrative is divided into two parts, with the first focusing on Christian and the second on Christiana, his wife. The book explores themes of faith, redemption, and perseverance, making it one of the most significant works in English literature and a classic of Christian theology.