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

An exquisite tunnel of cascading flowers.

The Empire Mine is "one of the oldest, largest, deepest, longest and richest gold mines in California."

The fossilized remains of ancient California redwoods.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Abandoned bridge hidden deep in the San Gabriel Mountains.

The largest collection of two headed animals in the world.

Contemporary art inspired by natural history and science drawing on ancient techniques in a modern world.

The last of its kind in the country.

The abandoned zoo enclosures offer a perfect place to experience the other side of the bars.

High on a hill overlooking Los Angeles lives a world famous, high power conical Tesla Coil.

During prohibition, corrupt city officials ran drinking dens under the streets of Downtown Los Angeles.

Treehouse motel and treehouse-building school.

A volcanic fissure over two miles long and up to 70 feet deep.

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

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

Cave carved out of a huge snow drift collapsed killing one and injuring five in July 2015.

This extinct shield volcano is the lightning rod of the Cascades.

A volcanic landmark located on an Ice age lake bed.

Stroll through a wonderland of stupendous moss-covered trees.

One small town in the Pacific Northwest transformed itself into a Bavarian-themed tourist destination.

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.

A bike being "eaten" by a tree is the real Vashon legend behind popular children's book, "Red Ranger Came Calling."

The longest continuous lava tube in Oregon.