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

An ice cream parlor chain that caters to vegans and pinball fans equally.

A colorful architectural gem in Seattle's uniquely modern Central Library.

Seattle's own bad art museum located inside Cafe Racer.

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

The century-old plant starred as the villainous clown's lair in the miniseries based on Stephen King's "It."

The collection of signage remembers the midcentury pushback against the new neon light.

An abandoned network of military bunkers and tunnels open for anyone willing to descend into the darkness.

This famous bridge twisted itself into oblivion, but not for the reason you might think.

This remarkable collection devoted to the study of fish includes 1 million preserved specimens from all around the world.

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

Shoreline strewn with the remains of ghostly fallen trees.

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

A tourist attraction founded around a slumping cabin.

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

This nature center has one of the largest collections of native raptors in the Pacific Northwest.

The short-lived railroad town in central Oregon has been abandoned since the 1930s.

This charmingly homemade amusement park has been growing for 40 years.

A whimsical menagerie of devils, krampuses, satyrs, and other horned creatures.

A library of only unpublished manuscripts.

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

Delightful disarray of found objects and clutter.

Their motto is, "We've been bonkers for hats even longer than you have!"

The world's smallest park was dedicated in 1948 as the only colony for leprechauns west of Ireland.