14: 100 Things You Will Never Find: Lost Cities, Hidden Treasures and Legendary Quests, Daniel Smith

The lack of Oxford comma in the subtitle ought to have set off alarm bells, surely. It's pure fluff, and poorly research fluff at that. You're better off reading Wikipedia in most cases. Item 95 is particularly silly: "Google's search algorithm." It contains this marvel:

No one outside the company is given access to [the algorithms], and employees must sign confidentiality agreements before starting work. Attempts to figure them out by rivals (along with curious geeks) have so far failed to uncover Google's secrets.

Not worth keeping (a phrase rarely heard!).