Watch Mysterious China: Marco Polo's Roof of the World (1970) : Full Movie Online Free The third installment of the Mysterious China series chronicles the further journeys of 13th-century explorer Marco Polo as he travels even deeper into exotic Asia. This documentary reveals the mysteries, beauty and history of the Eastern lands described in Polo's remarkable travel logs. Follow the tracks of the adventurous Venetian explorer -- one of the first Westerners to journey into China via the Silk Road.