Some of the most puzzling pieces of history are tantalizing works from the distant past which seems to have no explanation.

YouTube user Top5s has compiled a fascinating collection of these unique texts, drawings, and mysterious maps which have long baffled historians and researchers. 

Included in the feature is the infamous Codex Gigas, which is better known by its ominous nickname 'The Devil's Bible,' as well as the baffling Piri Reis map. 

Check out the awesome video at the Coast to Coast AM website.