With its vaulted ceiling and gilded details, this University of Washington library would feel right at home inside an old palace.

The spur that wouldn’t die.

A rare tour of a commercial jet assembly plant, held inside one of the largest buildings in the world.

At the most northwestern point of the contiguous United States lies a trail leading through an ancient forest to stunning cliff-side vistas and massive oceanside caves.

Eat your way from Ghana to Myanmar on this globe-trotting menu.

The longest and widest floating bridge in the world.

A frozen relic of Seattle's hydroelectric boom is now a teaching facility for future engineers.

A 1940s nuclear reactor built to produce plutonium for the Manhattan Project.

This unique Seattle structure was designed to be the greenest commercial building on the planet.

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

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

This beautiful landscape is the only Sichuan-style garden outside of China.

One artist's yard is full of shining, whirling kinetic sculptures that look like pure steel psychedelia.

Walking by this fence is like strolling along a portal to various fictional worlds.

Statue of Lenin, from Cold War era Czechoslovakia, now in a neighborhood of Seattle.

An abandoned 19th-century hospital now swirling in ghost stories.

The building features one of the last remaining free-floating spiral grand staircases in the U.S.

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

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

Feeding hungry Ballard boat workers since 1922.

The century-old remains of an abandoned farm town in eastern Washington.

Site of the greatest known waterfall that ever existed.

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

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