This fantastical waterfall is hidden in a cave located in a cracked cliff.

This memorial commemorating fallen Swiss Guards of the French Revolution has been called the saddest stone in the world.

Three bridges and one giant canyon make up this fantastic Spanish settlement.

Holy Hindu shrine in an enormous, monkey-filled limestone cavern.

This rustic cabin, outfitted with gun slits, was once home to John D. Tewksbury, patriarch of the bloodiest family feud in American history.