Bridges, terraces, and replicas of historic structures all built of rock and petrified wood by one man.

This great stone guardian of the forest is a relic from the land's volatile volcanic past.

Massive crater in central Oregon.

The longest continuous lava tube in Oregon.

A volcanic landmark located on an Ice age lake bed.

A rugged lava field dotted with molds of the ancient pines that were growing when the volcano erupted.

A volcanic fissure over two miles long and up to 70 feet deep.

Pillars made of 700 pieces of luggage climb to the ceiling of Sacramento Airport's baggage claim.

One of the largest fleets of armored vehicles in the world, sitting out in the California desert.

This quirky UFO-shaped curiosity is often mistaken for the airport’s control tower.

A chain of bells connect the California Missions and honor the legend of the "King’s Highway."

This crumbling Death Valley mining complex was known for its use of giant, 20-mule team wagons.

This ultra-modern California span is actually a titanic solar clock in disguise built by famed architect Santiago Calatrava.

Everything you always wanted to know about borates is here.

This giant temperature attraction created some giant electric bills.

Two mammoth statues inspired by equally tall tales lure tourists to this roadside attraction.

The California capital city once stood 10 feet lower than it does today.

Recovered from the brink of extinction, at home in the Financial District.

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

Millions of years of oxidation make a drive down this winding Death Valley road surprisingly colorful.

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

This turn of the century masterpiece has a mysterious goaty interloper.

A Barbary Coast watering hole built into a Gold Rush shipwreck.

A collection of memorabilia from the Beat era in the back of a San Francisco bookstore.