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

Bonsai trees that are up to a thousand years old.

Celebrate Earth Day with a menagerie of vibrant, artistic animal costumes.

The second tallest railway trestle bridge in America.

From overly ambitious (and eventually abandoned) atomic dream to bustling office park.

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

This grove of ghostly cedars was killed in 1700 by an enormous tsunami, felt from the United States to Japan.

This large Sitka spruce that appears to be floating in mid-air, has defied logic for years.

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

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

City Council meetings still happen in this historic building, impeccably preserved on the inside.

The building features one of the last remaining free-floating spiral grand staircases in the U.S.

A magical sanctuary of mythological statuary.

Shoreline strewn with the remains of ghostly fallen trees.

A surreal landscape where fanged rocks rise from the ground and the ocean feels like a great mystery.

A glimpse into the "Logging Capital of the World" at a time when there was far more forest and far less machinery.

A tiny plaque hidden miles into the Washington wilderness is all that remains to honor a shipwreck that left 18 people dead.

Tour the original street level of Port Angeles, buried underground in 1914.

Rustic natural hot springs in the deciduous rain forest.

Stroll through a wonderland of stupendous moss-covered trees.

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

One man's eclectic collection of treasures found at sea.