Kubla Khan: or, A Vision in a Dream: A Fragment is a poem written by Samuel Taylor Coleridge, completed in 1797 and published in 1816. According to Coleridge's preface to the poem, it was composed one night after he experienced an opium-influenced dream after reading a work describing Xanadu, the summer palace of Kublai Khan, the Mongol ruler and Emperor of China. Upon waking, he set about writing lines of poetry that came to him from the dream until he was interrupted by "a person from Porlock". The poem could not be completed according to its original 200–300 line plan as the interruption caused him to forget the lines. He left it unpublished and kept it for private readings for his friends until 1816 when, at the prompting of Lord Byron, it was published.— Excerpted from Kubla Khan on Wikipedia, the free encyclopedia.