Jail from the 19th century that was built by inmates.

A former gold rush boomtown has managed to stay in business for over 100 ramshackle years.

This perfectly preserved Chinese medicine shop was untouched for decades before being reopened as a museum.

These old stone ruins in the Oregon wilderness were once bathrooms and are steeped in legends of murder.

An institution that preserves the history of institutionalization.

This amazingly preserved Gold Rush town is a historian's dream.

A bizarre house filled with an astounding array of collections.

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

City Council meetings still happen in this historic building, impeccably preserved on the inside.

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

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

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

Site of the greatest known waterfall that ever existed.

42nd story Pyramid shaped penthouse tops Seattle's oldest skyscraper.

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

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

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

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

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

Rustic natural hot springs in the deciduous rain forest.

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

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

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