Menacing or in memoriam, the Silent People and their meaning are left to interpretation.

Legend has this precariously placed rock was placed by giants. Science has another explanation.

A subterranean house of worship carved right out of the bedrock.

A beautiful, dense forest in the shadow of Mount Fuji, with a tragic reputation.

Hot springs monkey spa in the middle of Hell's Valley.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

An exquisite tunnel of cascading flowers.

A magical place that lets you play in and explore the world of Studio Ghibli.

Three generations of intrepid collectors display their curious artifacts in a homemade museum right next to the caves they discovered.

This landmark is a central figure in the Nez Perce origin story.

This highest peak in Idaho can only be reached by traversing a formation known as "Chicken-Out Ridge."

Rare and gorgeous birds abound in this protected wildlife sanctuary.

A petroglyph map of the upper Snake River carved by prehistoric hunter-gatherers.

Natural rock water slides hidden in the remote forests of northern Idaho.

A mining town, now abandoned, was built in a canyon so narrow that the railroad ran right through the hotel lobby.

Rustic natural hot springs in the deciduous rain forest.

Stroll through a wonderland of stupendous moss-covered trees.

Remote, beautiful, and stigmatized, Las Hurdes is Spain's version of Appalachia.

Religious dwelling in a Spanish volcano.

Semi-mystical manmade towers of rocks decorate this rocky seaside.

Hidden well off the beaten path in Catalonia is this crumbling medieval castle that is slowly being covered in graffiti.

This huge abandoned fortress hidden inside a mountain holds a world of subterranean secrets.

Lava stone structures possibly dating back to the 19th century may have been a stopping point for voyagers between ancient Egypt and the Mayan Civilization.

The largest prehistoric cemetery on the Balearic Islands dates back over 2,500 years.