Hyperion is a science fiction novel written by Dan Simmons. It is the first book in the Hyperion Cantos series, which follows a group of pilgrims on a journey to the mysterious planet of Hyperion. Each pilgrim tells their own story, weaving together a complex narrative that explores themes of time, religion, and artificial intelligence. Hyperion is a richly imaginative and thought-provoking novel that has been hailed as a modern science fiction masterpiece.