He really did go to China!
According to Discovery News (via the History News Network), Hans Ulrich Vogel, professor of Chinese studies at the University of Tübingen, revisited Polo in a new book titled Was in China. Professor Vogel said that:
“The strongest evidence [of his visit] is that he provided complex and detailed information about monetary conditions, salt production, public revenues and administrative geography that have been overlooked so far, but are fully corroborated in Chinese sources.”
These sources only became available long after Polo’s departure, so he couldn’t have used them. And so the great traveler is rehabilitated at last.