A Renaissance book with 250 pages of seemingly encoded text and emblems which has stumped cyptographers for centuries.
The most likely theory is that it actually contains no meaning — it was just a gorgeous hoax by Edward Kelley.
References
- http://www.voynich.nu/
- http://www.cs.keele.ac.uk/km/blog/?p=18
- http://www.sciam.com/article…
- http://www.nature.com/news/2003/031215/pf/031215-5_pf.html
- http://www.bbc.co.uk/stoke/features/2004/02/voynich.shtml