A tiny microvalley etched into the side of Knocknarea Mountain hides another world.

An Iron Age fort on the edge of a seaside cliff offers a glimpse into an ancient, mystical world.

A 1940s nuclear reactor built to produce plutonium for the Manhattan Project.

A surreal landscape where fanged rocks rise from the ground and the ocean feels like a great mystery.

An annual celebration of the infamous, unsolved skyjacking.

This private home is famous for appearing in the cult-classic "Twin Peaks" series.

42nd story Pyramid shaped penthouse tops Seattle's oldest skyscraper.

Tour the original street level of Port Angeles, buried underground in 1914.

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

"The House That Love Built" is shying away from "The House That Ghosts Love."

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.

This family mausoleum is steeped in symbolism and looks more like a fantasy location than a grave.

A little piece of the Shire is hidden behind a plant nursery in Port Orchard, Washington.

An extraordinary mixture of natural beauty and man-made phenomena.

Rustic natural hot springs in the deciduous rain forest.

The longest continuous lava tube in the continental U.S. offers 2.5 miles of dark explorations for the adventurous.

These black pillars of volcanic basalt seem to call mountain climbers with an unbreakable siren song.

Despite his legacy of work in Spain, Cuba, and Florida, the larger-than-life writer's grave is a simple affair tucked in an Idaho cemetery.

See just what life was like in a 19th-century prospecting town.

This unassuming cheese empire in rural Oregon churns out more than 150,000 pounds of cheese each day.

This great stone guardian of the forest is a relic from the land's volatile volcanic past.

This historic steamboat is scuttled just a few hundred feet from where it was built over a hundred years ago.

Is this the most Portland place ever?

A vertically floating hemlock controls the waves and weather at Crater Lake.