The Platypus used to be considered a myth like Bigfoot and the Yeti.
18
There is an island near Italy that was the site of wars, a dumping ground for plague victims, and an insane asylum. It's considered so dangerously haunted that the Italian government does not allow public access.
78
There are pictures of Knights fighting Snails in old Medieval manuscripts - and nobody knows why.
23
There is a 600 year old 240 paged book called the Voynich Manuscript, that’s written language is still completely unknown today.
15