The Divine Comedy is Dante Alighieri's epic poem that narrates his journey through Hell, Purgatory, and Heaven. It is guided through these realms by the Roman poet Virgil and his beloved Beatrice. The poem uses these journeys as a means to instruct about sin and virtue. Hell is depicted as nine circles based on types of sin with brutal punishments. Purgatory is depicted as a mountain with seven terraces to purge oneself of the seven deadly sins. Heaven is depicted as concentric spheres where the soul ascends closer to God based on virtue.