Throughout history, certain locations have become so dangerous, fragile, sacred, or secretive that governments and institutions have made the rare decision to close them off to the public entirely.

From reverse waterfalls to gravity-defying hills, some places on Earth seem to challenge physics. These strange spots attract ...

The world is full of awe-inspiring places that seem too surreal to be true, or are shrouded in stories that simply cannot be explained. And Europe has more than its fair share of both. From rock ...

From secret islands to radioactive zones, here are 10 places on Earth where humans are strictly forbidden to enter and the surprising reasons why. Access to certain areas is strictly forbidden to ...