A second generation sun-powered marvel lights up the night.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Internationally-recognized arts center housed in a century-old former military barracks.

Most-visited and most-photographed slot canyon in the American Southwest.

The world's longest known cave system.

Devilish landscape, once cinema home to giant alien bugs, now derelict roadside attraction.

Adolph Sutro's little-known, geographically inaccurate, deprecated monument.

An Olympic hero stripped of his medals is buried in a town he never visited, which took his name after his death.

The second oldest continuously operating bar in Louisiana.

The museum chronicling a treasure hunter's dream, fulfilled.

Standing in a state of "arrested decay," this ghost town allows for a detailed peek into Gold Rush life in an unusually harsh climate.

"We Seceded Where Others Failed."

These once-beautiful historic graveyards are set against the barren Virginia City hills.

Introducing the Green Fairy to her fawning masses.

An optical illusion found amid a logged redwood forest.

Arrr! The most authentic collection of pirate artifacts in the world... matey.

Rippling sand dunes frozen in the Arizona rock.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

Concrete strongholds stand guard over the Golden Gate.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

An abandoned Jazz Age dream home and con man's hideout in Death Valley.

Home to the "Circus" trees created by Axel Erlandson.

The former home of the Nobel Prize-winning American writer is now home to dozens of six-toed cats.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.