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

This former coal gasification plant found a curious second life as a popular public park.

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

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

A walk through the historic city center, under the streets of Seattle.

During its heyday, 72 one-ton buckets from this dredge bore into the Powder River excavating vast gold deposits.

A stunning landscape of bunkers that once stored chemical weapons.

This large maar crater in Oregon is the bigger brother to Hole in the Ground.

At the base of Steens Mountain resides an otherworldly desert.

A sprawling cave network created by a lone lava tube.

Home to the only outdoor municipal elevator in the United States.

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

Mountain known by the Tillamook Tribe as "the place of the supreme deity."

A rugged lava field dotted with molds of the ancient pines that were growing when the volcano erupted.

A volcanic landmark located on an Ice age lake bed.

Two massive rock outcroppings on the Oregon coastline.

Despite a legend that says this highest peak in Oregon was climbed in high heels, scores of people have died on its slopes.

Massive crater in central Oregon.

You might know it as the Overlook Hotel, but the inside is not going to be familiar.

A massive sea stack famous for its appearance in The Goonies.

The longest continuous lava tube in Oregon.

The second largest waterfall by volume in the U.S., Willamette Falls is outdone only by Niagara in the amount of water that is pushed northward.

Oregon's unexpected high desert, displaying layers of time in a colorful show.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.