Overlooking Puget Sound sits a garden with a Buddhist prayer wheel and an elaborate labyrinth.

Four abandoned towers hidden above the Douglas fir forest in Washington.

This semi-secret garden in south Seattle emulates a traditional Japanese garden using the plants of the Pacific Northwest.

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

Rustic natural hot springs in the deciduous rain forest.

A huge musical sculpture and other art installations on the National Oceanic and Atmospheric Administration grounds.

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

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

The cardinal directions, set in stone.

This sci-fi gazebo located in a Washington power town is made from old bits of industrial electrical equipment.

This 50-ton ship on Orcas Island has never seen the ocean.

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

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

Every summer West Seattle experiences a housing bloom.

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

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

Protected from the elements, these Native American rock paintings have survived approximately 250 years.

This inanimate goat created by the "welding nun" has been helping to clean up the city of Spokane for more than 40 years.

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

Nuclear reactor created the plutonium used on Nagasaki.

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

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.

This monument remembers the first Japanese Americans forcibly relocated during World War II.