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

According to legend, you must remain completely silent while passing this man-made mound or suffer the consequences.

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

Statues of Ramona Quimby, Henry Huggins, and Ribsy the dog in the park where their adventures "really happened."

Hundreds of handmade critters fill this tiny window gallery in the heart of Portland's Alberta Arts District.

Instead of fruit, the branches of this tree are brimming with hopes and dreams.

Not-so-fearsome tiny trolls live under this wooden train trestle in Portland.

There's something big lurking beneath the surface of this tiny Oregon park.

The first North American landing spot for James Cook on his third voyage of discovery in the Pacific.

The park preserves a single, rare species of carnivorous plant that spells doom for unsuspecting insects.

On the Oregon coast there is a natural hole that seems to be draining the sea.

This garden is dedicated to a Portland cartoonist who specialized in dark humor.

This public art piece proves that in Portland even reporting the weather is a thing of whimsy.

A heavenly experience, right here on Terra Firma.

Come for the speed, leave in love with the desert.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

Perhaps the world's only gas station inspired by a political scandal.

This scenic gorge is named after one of the most famous Bigfoot attacks in pseudohistory.

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

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

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

A giant Troll lurks under one of Seattle's oldest bridges.

Remember that scene in the Matrix, when Neo is in the big white room with all the weapons flying by? Well, this is what it would look like if he had wanted trees instead of guns.

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