When zealous marijuana enthusiasts kept stealing the "Mile 420" highway marker, the State of Colorado got creative.

The haunted reputation of these abandoned Colorado train tunnels is probably not helped by the terrifying spiked fence.

See six states from the newly restored 100-year-old historic roadside attraction.

This Boeing KC-97 tanker is now a restaurant for aviation lovers.

Massive still life just off the highway in Kansas.

The oldest house in Lindsborg, Kansas, includes some fascinating inscriptions.

A diverse, expansive nature preserve in northeastern Kansas.

A spiritual center in the Santa Monica Mountains founded by Alice Coltrane after the death of her husband and fellow jazz musician John Coltrane.

Decommissioned experimental solar facilities that pioneered solar energy technology.

In one of the hottest parts of the Mojave Desert, shallow bedrock forces the typically dry Mojave River to the surface in this canyon, providing a vital oasis for humans and wildlife.

The American rainmaker and a burst dam.

This Chinese art gallery is hidden inside the Sunrider Corporation headquarters.

A sparse, solitary sequoia still stands as a living tribute to the famous conservationist who planted it—but it's dying.

One of the largest Marian shrines on the West Coast stands rather unexpectedly in Silicon Valley.

This giant shopping mall still holds signs of its automotive past.

Thousands of turbines whir at the origin of North American wind power.

This conservation area is also home to many of the region's desert tortoises.

A bronze tribute to a legendary Californian, the self-proclaimed "Emperor of the United States."

One man's quest for the ultimate road trip vehicle.

Concrete strongholds stand guard over the Golden Gate.

A pair of pure white felines guard the entrance to a spot of California real estate established as an artist's haven.

Housed in a memorial lighthouse, this museum relays the history of surfing, beginning with the antics of royal Hawaiian teenagers.

'Cause the fence start shaking, the earth was quaking.

The world's largest outdoor organ is played weekly by one of just two civic organists in the U.S.