Codex Gigas, the world's largest existing medieval manuscript, weighing 75 kilograms (165 pounds), was created in the early 13th century in a Benedictine monastery in Bohemia (in the modern Czech Republic). In 1648, during the Thirty Years’ War, the Swedish army took the codex as spoils of war. It is now in the National Library of Sweden.
You can learn more about “The Devil‘s Bible” on the Library’s website, where you can also view pages of the entire Bible by clicking on "You can browse a digitalised version of the manuscript . . ." (the picture of the Devil is on page 577 of 629), and watch a 15-minute video by clicking on "Film" at the right.