A small contribution, I hope, to the beautiful pastiche we weave of our history and mythology. Here's a link to the entire account of Willem van Ruisbroeck (William of Rubruck)'s travels through central Asia and amongst the Mongols. It was written in the mid-13th century in excellent Latin, but I figured an English translation would be a little more beneficial. William was a Flemish monk serving Saint Louis (King Louix IX of France (Capetian), Duke Louis II of Artois) during the Crusades (VII & VIII in Egypt and the more fluent situation around Acre afterwards).
In my opinion, this is an awesome piece of history, and a lot more useful than Marco Polo's scribbles!