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

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

The site of the Wellington avalanche, one of the America's worst railroad disasters.

One small town in the Pacific Northwest transformed itself into a Bavarian-themed tourist destination.

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.

A tiny plaque hidden miles into the Washington wilderness is all that remains to honor a shipwreck that left 18 people dead.

A surreal landscape where fanged rocks rise from the ground and the ocean feels like a great mystery.

One man's eclectic collection of treasures found at sea.

Shoreline strewn with the remains of ghostly fallen trees.

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

Stroll through a wonderland of stupendous moss-covered trees.

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

This family mausoleum is steeped in symbolism and looks more like a fantasy location than a grave.

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

Site of the greatest known waterfall that ever existed.

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

An electrifying collection of gadgets and literature from the 16th through 20th centuries.

Stones speckled along Harris Avenue reveal hidden nuggets of the past.

A library of only unpublished manuscripts.

The oldest apple tree in the Pacific Northwest.

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

Mysterious ancient petroglyphs carved on a glacial boulder at the tip of Bainbridge Island.

This monument remembers the first Japanese Americans forcibly relocated during World War II.

This Puget Sound military post has a long, turbulent history as a gateway to the Pacific.