is a famous enigmatic book from Europe ostensibly written in an unknown and undeciphered language during the Renaissance (though some think it is of modern origin). It is full of elaborate but weird illustrations of unknown plants, astrological diagrams, little naked women in tubs connected by pipes, and other oddities.
I'm putting this in the history rather than the language subforum because it is uncertain that the book is not a hoax. Then again, it's also uncertain that the book is a hoax. The debate has continued for decades and we may never know for sure.