14. The Voynich Manuscript
Say hello to the world’s most mysterious book – the Voynich manuscript. This small book contains several beautifully detailed illustrations of animals and plants, and is written in an unknown language that archaeologists have been unable to decipher even to this day!
According to carbon-dating, this book was written sometime in the 15th century somewhere in Italy. While some historians are still trying their best to crack the language’s code, others say that the language is simply gibberish and is meaningless. But no one knows for certain which is the case.