A young botanist's horticultural vision realized through a lifetime of planting, tending, and collecting seeds.

A petroglyph map of the upper Snake River carved by prehistoric hunter-gatherers.

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

This former coal gasification plant found a curious second life as a popular public park.

A tribute to the Nirvana frontman hides beneath the bridge that was the singer's beloved hangout spot.

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

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

Native American burial mounds? Giant gopher dens? No one knows what created the Mima Mounds.

A comprehensive collection of bonsai set in a beautiful campus.

This 22-acre botanical garden is home to the largest collection of rhododendrons in the world.

Home to the deepest rift anywhere on Earth.

This century-old confectioner's outlet store was plucked right out of the Seattle World's Fair.

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

A beautiful footbridge with over 2,000 glass sculptures along the walls and ceiling.

This Puget Sound military post has a long, turbulent history as a gateway to the Pacific.

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

Only known mainland rookery of the threatened Stellar sea lion.

A giant roadside black bird marks the location of this eclectic local mall.

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

Home of Jake the Alligator Man, the mummified remains of a cigar smoking, cross-dressing celebrity of the Northwestern coast.

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.

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

A beautiful final resting place for some of the noteworthy deceased.

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