I was soloing in the Crawler's nest one day and while trying to pull a crawler away to a safe spot I discovered a hidden room with a strange apparatus inside.

I was really excited to have discovered something on my own and later found out that there were several more like it. No one knew exactly what they did or what exactly they were for but it was a secret I discovered for myself and I was excited!

As far as we know there are no secrets or unsolved mysteries in XIV but what secret or what kind of secret would you like to see?

Something that isn't even hinted at in letters or updates. Something that one person discovers one day while adventuring and reveals to the rest of Eorzea to which every person flocks to see for themselves. The mystery of this thing would bring many to try to solve it's secrets or how to unlock it in some way.

Perhaps in a secret room at a difficult location there lies a glowing sword ala Sword in the Stone and many come to try and free it and fail. Perhaps someone from Garlean frees it and threatens to destroy us all and of course we rally to defeat him.

I went off track, post your ideas and maybe we'll see something implemented someday that none of us expected!