Naturally carbonated water fills the mineral baths at this 19th-century California resort.

This L.A. fixture has been serving hot dogs out of a giant hot dog since 1946.

This lonesome Monterey cypress has survived centuries of wind, salt, and at least one attempt at arson.

On the summer solstice each year, shadows align with a 14,000 square foot painting to reveal a secret message.

A unique collection of old miners' cave homes carved in to the hillside cliffs near Death Valley.

These were the largest wind chimes in the world when artist Tom Van Sant created them for a California mall in 1967.

A monument to the frontier doctor who came up with the idea of delineating highways with a painted line.

The second-largest giant sequoia in the world.

Located close to a movie studio lot, this restaurant has a long history of star-studded patronage.

A picturesque example of brute-force engineering conquering nature.

California's first suspension bridge.

Artist Jack Pierson made this surreal sculpture in honor of Wonder Valley, a countercultural community on edge of civilization.

Hidden inside a gift shop that doubles as a museum, this gargantuan yo-yo can only be operated by crane.

This hiking/biking/horse trail along an old railroad grade features trestles, tunnels, and a roadless stretch through the scenic Susan River canyon.

This massive redwood tree has stood in Northern California for nearly 2,000 years.

Grab a latte at the birthplace of modern American skateboarding.

A fire lookout atop a glacial pinnacle is reached by climbing three vertiginous flights of stairs.

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

California's longest-running tourist attraction is a stump.

At night, a grove of towering redwood trees growing through the pavement block out all light from the so-called “Dark Park” of Madrone Avenue.

Pasadena’s Stonehenge.

What began as an illegal art installation has become a symbol for unity, ocean awareness, and coastline preservation.

Folk art crafted from discarded vegetable crates.

This small oasis of flora and art was created in remembrance of a local auto business owner.