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

The Denny Substation has been called "the coolest substation in the world" and sits in a densely populated Seattle neighborhood.

People come from across the globe to swim in this lake believed to have healing properties.

"The Reptile Man's" very own roadside zoo features an albino alligator.

Sleep beneath the big screen at this old-school movie theater.

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

The gravestones in this lost burial ground were bulldozed and replaced with houses and a dog park.

Seattle’s Whimsical Mural Master.

A lush Seattle garden designed by the same landscape architects responsible for New York's Central Park.

A library of only unpublished manuscripts.

Offering an enjoyable alternative to the standard hellacious post office trip.

This quiet neighborhood is also home to a 700-ton rock transported by the last Ice Age.

Quirky movable sculptures have been racing through the town since 1983.

An annual celebration of the infamous, unsolved skyjacking.

The four tall pillars once marked the entrance of the historic Seattle church that fought for women's suffrage and civil rights.

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

Leave a button on the jacket of this iconic Seattle clown.

A commemorative mural in this tiny Ballard park honors the neighborhood's rich Scandinavian ties, particularly with Seattle's Norwegian sister city Bergen.

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

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

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

This Cold War siren is one off the last of its kind still standing with its immensely powerful original horn.

A piece of Seattle’s historic Chinatown preserved inside a modern museum.

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