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

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

Local legend has it that an old, decaying staircase outside this cemetery is haunted by dozens of ghosts.

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

A "sinister, whimsical, tacky, and really orange" public art installation hidden under a Seattle bridge.

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

A home made entirely from scrapped, reclaimed and recycled material in Whitman County, Washington.

Hundreds of hopeful gold miners came here to get rich, but only two years later the small town was deserted.

The first park built over a freeway is a brutalist masterwork.

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

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

Shoreline strewn with the remains of ghostly fallen trees.

The highest point in Washington state is a volcano covered in glaciers.

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

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

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

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

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

A whimsical village of unique treehouses resides in a Washington forest.

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

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

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

Pick up all of the cosmic knick-knacks under the sun or take a creative writing course, all offered in this novelty storefront.

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