Though strikingly beautiful, Seattle's other railway station is now largely forgotten.

Spanning an elevation of 160 feet and containing 388 steps, this is Seattle's longest staircase.

An enclosed rotunda at the Henry Art Gallery in which viewers can look up and see the uninterrupted sky.

Peruse rare tomes like poetry bound in pearls or books with branches and berries growing out of their spines.

A collection of odd-shaped and quirky sounding instruments handmade by a midcentury inventor-composer.

This private home is famous for appearing in the cult-classic "Twin Peaks" series.

The final resting place of one of the most sensational guitar players of all time was created only after his father got the rights to his music.

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

This medieval village/restaurant perpetually celebrates the year 1376.

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

Twin Peaks' real life Double R Diner has been restored to its damn fine television look.

The tiny church offers succor to travelers driving by, but only eight at a time.

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

A small town market proudly displays numerous taxidermied animals along its walls.

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

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

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.

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

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

This extravagant Art Nouveau rest stop features a million-dollar view of the Columbia River.

A boat ride through utter darkness, lit only by headlamps, reveals an emerald green pool locals believe is sacred.

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

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