This 4,000-foot-diameter hole is touted as "the most well known, best preserved meteorite crater on Earth."

A geological mystery on Camelback Mountain.

Giant, natural amphitheaters made of delicate geological formations called "hoodoos."

Legend says one of the world's largest marine geysers is actually a whale that got wedged within the rocks.

The longest continuous lava tube in Oregon.

The deepest lake in the United States, and once the site of epic destruction that lives on in legends.

The short oil boom of Venice Beach, and its swift removal from the tourism-laden landscape.

The rocks in this arid basin leave trails of movement behind them.

A massive volcanic plug is now a protected area that hosts a number of bird species.

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

Towering basalt columns, a creation of fire and ice.

Rising out of miles of farmland, these buttes are sometimes called the world's smallest mountain range.

California's own majestic geyser is powered by a subterranean volcano.

The fossilized remains of ancient California redwoods.

A giant knight, sex education, date shakes, and Jesus coexist happily in this Coachella Valley desert oasis.

In one Santa Monica parking lot a mushroom cloud made of chains heralds a message of peace.

Created in 1972, the famous sculptor's intricately detailed monument to San Francisco is overflowing with city landmarks.

The largest wooden building in the world now houses a fascinating collection of aircraft.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

The oldest lighthouse on America's west coast no longer needs keepers, yet they maintain the site anyhow.

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

An extensive collection of ancient Egyptian artifacts and mummies.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

At this gas station in the middle of the desert, a convenience store has been carved directly into the rock.