Olivia Newton John & ELO - Xanadu (Film Version)

Xanadu or Zanadu (Chinese: 上都; pinyin: Shàngdū) was the summer capital of Kublai Khan's Mongol Empire, which covered much of Asia. It is in Inner Mongolia, 275 km north of Beijing, northwest of Duolun and northeast of Lanqui/Zhenglan Banner/Dund Hot. The capital consisted of the square-shaped "Outer City" (2,200 metres square), "Inner City" (1,400 metres square), and the palace, where Kublai Khan stayed in summer. The palace is 550 metres square, 40% the size of Forbidden City in Beijing (China). The most visible modern-day remnants are the earthen walls though there is also a (ground-level) circular brick platform in the centre of the inner enclosure.