The lush coastal city of Astoria is riddled with forgotten secret sidewalks.

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

This semi-secret garden in south Seattle emulates a traditional Japanese garden using the plants of the Pacific Northwest.

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

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

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

Tour the original street level of Port Angeles, buried underground in 1914.

Train debris from the deadliest avalanche in United States history can still be found in the ravine where so many perished.

The second tallest railway trestle bridge in America.

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

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.

A piece of Seattle’s historic Chinatown preserved inside a modern museum.

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

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

This Seattle curio shop collects and sells haunted items in order to spread wonder one grim artifact at a time.