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

Tacoma’s 25-foot coffee pot music spot has served up over 80 years of concrete kitsch.

Mine your own precious stones.

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

The founder of a utopian religious community based on the Golden Rule laid his son to rest on this grassy hill.

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

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

An outsider art duo's yard has been turned into a whimsical public gallery.

Nuclear reactor created the plutonium used on Nagasaki.

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

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

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

Shakespeare has been brought to life in this open air theater for the better part of a century.

A public fountain that spouts "health water" from a nearby spring.

A forensic lab dedicated to fighting crimes against wildlife.

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

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

In Washington's Yakima Valley lies a town "where dinosaurs roam."

This strange hill on Old Fort Road where gravity works in reverse has been fascinating locals for years.

The home of the world's first and last remaining "wooly ant."

Private collection of art inspired by cabinets of curiosity.

World's only nuclear reactor operated by liberal arts undergraduates.

This Oregon farm is dedicated to teaching people the professional art of tree climbing.

An extraordinary mixture of natural beauty and man-made phenomena.