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

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

Hidden inside this Arizona fast food franchise is an in-depth exhibit on the famed WWII counterintelligence program.

A geological mystery on Camelback Mountain.

This collection of neon icons is preserving Arizona's history, one sign at a time.

The world's largest rose bush has literally outgrown the pioneer museum it was planted behind.

An arsenic-filled pool in the Grand Canyon takes on the appearance of a giant, overflowing pumpkin.

Eons ago, a rushing lava river formed this pristine passage through solid rock.

The artist James Turrell is repurposing an extinct volcano crater as an observatory to experience the cosmos.

A replica of the flagpole that gave a frontier town its name.

Inside this garden, visitors are offered a glimpse into how inhabitants of the region survived centuries ago.

A scrap-metal sculpture recalls an infamous 19th-century camel.

Hidden on a cattle ranch in Arizona, this bookstore has been celebrating Southwest literature for more than 40 years.

A small canyon with petroglyphs and a seasonal waterfall, only a short hike from the remnants of old Route 66.

The state's only comprehensive museum dedicated to the mineral that defined its history and economy.

The lost ruins of the forgotten ferry lie hidden beneath the silt.

Bootleggers ran booze beneath this building before (and after) Route 66 appeared beside it.

For those going through a life transition, a place to leave behind a piece of your former self.

A once popular resort—said to be the vacation spot of gangster Al Capone—now remains abandoned in the woods of Arizona.

Once a year, at exactly 11:11 a.m., this monument comes to life.

This old selenite mine is dotted with tiny crystals that make it shimmer like it's covered in glitter.

Hike the unusual hoodoos and rock formations that form this little-known natural wonder.

Come for the pizza, stay for a performance on the world's largest theater pipe organ.

The shop's owner has spent decades in the desert wearing nothing but a strategically placed sock.