A 30-year-old Sycamore tree grown from a seed taken to the moon and back.

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

Peruse rare tomes like poetry bound in pearls or books with branches and berries growing out of their spines.

This edible park is open to any and all foragers.

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

An extraordinary mixture of natural beauty and man-made phenomena.

A tiny red pebble marks what may be the quietest outdoor spot in the United States.

Couple's personal collection of pinball machines turned public pinball museum.

Rustic natural hot springs in the deciduous rain forest.

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.

The highest point in Washington state is a volcano covered in glaciers.

This Seattle store is packed with all sorts of curious creatures and creations.

Pick up all of the cosmic knick-knacks under the sun or take a creative writing course, all offered in this novelty storefront.

Old submarine parts have been converted into faux whale fins.

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

A sliver of nostalgia in Seattle's Viretta Park.

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

This former INS center is now home to a thriving community of artists, from performers to painters to architects.

A Seattle oddities shop brimming with Victorian-era gems and antique curio.

Remnants of a forgotten 1920s speakeasy and Prohibition-era murals were discovered in its basement.

In this subterranean brick arcade, a small shop continues the ancient practice of bookbinding.

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

This contemporary art museum is filled with other, smaller museums, which feature work from artists primarily in the Pacific Northwest.