Brain Pickings shared this today and I almost fainted on the spot from excitement.
Some bibliophiles consider the Codex Seraphinianus to be weirdest book of all time, not to mention one of the most perplexing and intriguing. In 1976 Italian artist Luigi Serafini began working on creating the book which has been described as "an elaborate encyclopedia of imaginary objects and creatures". Do some research about this book and you'll be sure to hear a shopping list of other descriptive words like unique, beautiful, surreal, weird, provocative, cryptic, grotesque and bizarre.
On top of that it's not written in Italian, or English even. No, Serafini instead chose to write his tome of curious oddities in a language wholly devised by him, and seemingly only known to him; a fact that has excited and challenged
the cryptographically minded since it was first published in 1981. (Cryptographers have tried unsuccessfully to decipher the book)
If you'd like your own copy of the Codex Seraphinianus (the 2013 edition) you can pick one up at Amazon, (though be prepared for it to be on back-order) or if you've got lots of dollars to spend you can try Abe Books for the 1983 edition, the 1993 edition, or a first edition selling at almost a whopping -- though let's face it, not unreasonable -- $5000US.