An obscure waterfall that looks like something out of a fantasy novel.

This grove of ghostly cedars was killed in 1700 by an enormous tsunami, felt from the United States to Japan.

The strange phenomenon causing gravity to "work backwards" on this hill has been blamed on the paranormal.

The Denny Substation has been called "the coolest substation in the world" and sits in a densely populated Seattle neighborhood.

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

The tech giant built three enormous glass orbs in Seattle so employees could work inside a rainforest greenhouse.

The first park built over a freeway is a brutalist masterwork.

A house filled to the brim with oddities and curiosities.

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

In this subterranean brick arcade, a small shop continues the ancient practice of bookbinding.

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

A Seattle oddities shop brimming with Victorian-era gems and antique curio.

Couple's personal collection of pinball machines turned public pinball museum.

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

Nuclear reactor created the plutonium used on Nagasaki.

A Boeing mechanic and his wife leave a whimsical, stone sculptured garden as their legacy.

An allegedly haunted mansion with a tragic, tawdry past.

Seattle's super-sized cowboy apparel once belonged to a themed gas station that wrangled in herds of tourists.

This Seattle museum displays the history of the telephone through an impressive collection of telecom equipment.

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 second tallest railway trestle bridge in America.

This unique library spans a mighty river.

This long, dark tunnel is open to hikers, but those without lights are known to get confused even on the straight path.

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