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

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

Bonsai trees that are up to a thousand years old.

An enclosed rotunda at the Henry Art Gallery in which viewers can look up and see the uninterrupted sky.

Residents of Fremont in Seattle have considered it the center of the universe since the 1970s.

This historic building provides a powerful glimpse into the lives of Japanese Americans forced to relocate during World War II.

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

This Seattle joint serves food inside an old train car once used by FDR.

"The House That Love Built" is shying away from "The House That Ghosts Love."

Essence of hound's tongue and tincture of bloodroot are just the tip of the herbalist iceberg at this beautiful, impressively-stocked apothecary.

This family mausoleum is steeped in symbolism and looks more like a fantasy location than a grave.

A French chateau, failed utopian community, odd museum, and Stonehenge replica in rural Washington State.

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

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

Stroll through a wonderland of stupendous moss-covered trees.

An old vending machine serves up unpredictable beverages from its seemingly magical insides.

A 100-year-old purveyor of curiosities, curios, and kitsch featuring mummies, shrunken heads, and a Fiji Mermaid.

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

The mastermind behind this palatial hotel perished on the Titanic weeks before its grand opening.

The historic “pink house on the hill” is an architectural gem that now serves as a center for water conservation.

A geological mystery on Camelback Mountain.

This former mining hub holds a surprising abundance of undisturbed relics from the Old West.

Granite outcropping that the state's tourism bureau doesn't promote because of its delicate ecosystem.

An old train trestle re-imagined as an Egyptian obelisk.