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

The remains of a former logging boom town, crumbled away in the forest.

The illuminated falls are a gem in North Cascades National Park.

A cave interior in the shape of the ancient rhinoceros, created by lava cooling around its carcass.

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

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

A young botanist's horticultural vision realized through a lifetime of planting, tending, and collecting seeds.

Allowing humans and fish alike to migrate from freshwater to saltwater and back again.

Essence of hound's tongue and tincture of bloodroot are just the tip of the herbalist iceberg at this beautiful, impressively-stocked apothecary.

A rotting tree in the middle of Seattle doubles as an elaborately-controlled art piece.

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

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

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

A house filled to the brim with oddities and curiosities.

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

This remarkable collection devoted to the study of fish includes 1 million preserved specimens from all around the world.

An exercise in patience and imagination, where Mother Earth turned common stuff into precious hidden treasures.

A short hike into the mountainside forest reveals a decaying 1890s town.

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

An abandoned network of military bunkers and tunnels open for anyone willing to descend into the darkness.

From overly ambitious (and eventually abandoned) atomic dream to bustling office park.

Former farm staffed by mental patients is now a public park.

The graffiti-covered remnants of a former triangulation station are balanced precariously on this California peak.

Another of California's unused Cold War missile defense complexes has become a graffiti gallery.