"Xanadu was visited by Venetian explorer Marco Polo in 1275. It became fabled as a metaphor for opulence, most famously in the English Romantic Samuel Taylor Coleridge's poem Kubla Khan. Other occurences are the Kane's mansion in Citizen Kane, the film Xanadu, starring Olivia Newton-John and Gene Kelly, songs by Dave Dee, Dozy, Beaky, Mick & Tich and Rush."