A watering hole where the options for seating include a bar, patio, or subterranean cave.

Established in 1853, this crumbling cemetery sits forgotten on the corner of Church and Chapel in Gold Country.

The first U.S. town to secede from the Union, only to vote themselves right back in.

Built to hold Gold Rush wealth, this building has withstood the test of time.

California's first suspension bridge.

The oldest orange tree in California spawned a generation of citrus farmers.

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

This Taoist temple is the oldest continuously used Chinese temple in California.

Experience the "opulence, grace, and grandeur of Eureka's most famous Victorian Inn."

Commonly referred to as the most photographed Victorian home in the United States.

A vaudeville performer mounted this hollowed-out redwood log onto the chassis of a truck, and toured the country spreading a message of conservation.

Outsider art or homage to aliens?

Seven ceramic sculptures are scattered around this California college campus.

This graffiti-covered bridge is the quintessential vision of a place for disillusioned youth to escape the complexities of burgeoning adulthood.

The only parking meter in the entire town, it is surrounded by 100 free spaces.

The largest drain hole in the world.

California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.

A sculpture dedicated to Napa Valley's oldest mineral water company.

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

This historic California cemetery holds the bodies of veterans of both the Civil War and the Donner Party.

A huge work of Burning Man-inspired outsider art on the grounds of a California winery.

Art Deco stylings conceal the true nature of this bridge.

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

This 15-story mural celebrates the 50th anniversary of the musician's iconic "At Folsom Prison" album.