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

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

A colorful architectural gem in Seattle's uniquely modern Central Library.

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

A house filled to the brim with oddities and curiosities.

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

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

A museum dedicated to the history and exploration of both popular music and science fiction.

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

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

Stroll through a wonderland of stupendous moss-covered trees.

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

Rustic natural hot springs in the deciduous rain forest.

In the middle of a desert subdivision, there is supposedly an impact crater site from Kcymaerxthaereal times.

The U.S. Air Force has an anti-satellite laser weapon.

A blacklight journey through a celestial art exhibit.

Reproductions of nine banned oil paintings coyly hidden behind a curtain in a New Mexico conference room.

Some 2,000 carvings show this rare desert spring has been an oasis for travelers for over a thousand years.

This innocuous New Mexico storefront was once the secret jump-off spot for Manhattan Project scientists.

Its history includes dinosaur fossils, cattle rustlers, Georgia O'Keeffe, and a mythical giant rattlesnake named Vivaron.

Adobe ruins punctuate the beauty of an 800 foot canyon carved by the Canadian River.

A half-acre utopia in the New Mexico desert features a graveyard, a game of horseshoes, a library, and a mailbox.

More than 21,000 images fill this overlooked gem of a prehistoric site.

This popular pilgrimage site offers a hole filled with holy healing dirt.