"Pilgrim's Progress" is an allegorical novel written by John Bunyan in the 17th century. It follows the journey of a character named Christian as he travels from the City of Destruction to the Celestial City. Along the way, he encounters various challenges and characters that represent different moral and spiritual lessons. The story is divided into two parts, with the first focusing on Christian's journey and the second on his wife, Christiana, and their children. The narrative explores themes of faith, redemption, and the struggles of the Christian life, making it one of the most significant works in English literature.