One of the best-preserved ghost towns in Arizona speaks to the difficulties of establishing mining towns in the 19th century American West.

This huge dam across the Colorado River caused an armed standoff between two U.S. states.

A century-old miner's quarters turned mansion.

The gambling entrepreneur who built a city was also an avid collector of classic cars.

A B-17 bomber stands as a memorial to the residents of Tulare County who served in World War II.

A water tower shaped like a giant coffee pot looms over a small Swedish village in Central California.

For roadside fast food, pull over at the giant orange.

One of the oldest adobe structures in Northern California.

Today's aerospace industry can be traced back to one man and his gliders.

A plaque outside the San Jose airport commemorates the insect's arrival to the West Coast.

A life-sized mammoth sculpture marks the spot where the remains of a Columbian mammoth were discovered in 2005.

It took years to decode its mysterious messages.

At night, this glittering musical tunnel draws skaters and photographers.

Three plaques mark the spot where the "forgotten father of broadcasting" worked.

Anyone can control this glittery light installation with just a phone call.

Eight huge lanterns lining a city street can change color on command.

A lonely monument to the original Silicon Valley tech campus.

The world's most famous donkey lives in this pen.

One of the largest free-standing structures ever built, this dirigible hangar is now simply a giant skeleton.

This airfield played a key role in both World War II and the Cold War.

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

Outside San Francisco lies a small clown cemetery and memorial.

The peaceful gravesite of a rugged wild west gunman echoes the touching story of his last days.

The final resting place of the Emperor of the United States and Protector of Mexico.