This geothermal hot spring hides beneath a slowly growing mineral dome.

The eerie remnants of an ancient forest were hidden under the sand for centuries.

Hollowed out cedar log tubs set in an ancient towering forest.

This frequently-photographed waterfall takes only a short hike to visit.

A roaring, awe-inspiring double cascade of icy water flows through woodland Oregon like something out of a Tolkien novel.

Stop by to view a fleet of handmade kayaks, all modeled on traditional Arctic hunting vessels.

Hidden in Portland’s West Hills, a 170-year-old marker literally stakes out the Pacific Northwest.

This sprawling concrete suburb of Kraków was designed by the Soviet Union as the model proletarian city.

The site of the first battle of World War II.

A collection of relics from the Spiritualist Camp Chesterfield.

A large collection of motorbikes with some impressive gems.

Tucked away in the forests of Indiana resides an abandoned waterslide that is now a popular graffiti haunt.

You thought Santa Claus didn't exist, but it turns out you were wrong.

This mysterious hill seems to pull objects uphill.

Symbolic attempt to overcome the issues of life.

Secret US military film studio in the Hollywood Hills.

This forgotten Frank Lloyd Wright house is an architectural marvel at the end of a sleepy residential street.

One of the world's largest collections of rare and magnificent bird specimens.

A little barn in the middle of the city preserving Hollywood treasures since 1985.

The quiet canyon has a tumultuous history involving a doomsday cult.

Though tiki culture has gone in and out of fashion, the Tonga Hut has always been flying the flag in Los Angeles.

This hilltop park offers magnificent views and a Frank Lloyd Wright masterpiece.

A multimedia experience that chronicles the atrocities of racism.

World's oldest operating science fiction and fantasy club, once home to Ray Bradbury and L. Ron Hubbard.