A community gathering place that once housed half-ton tanks and the World's Fair.

Oddly shaped rock formation, misassociated with a nearby utopian community.

A house carved into a rock in the 1940s.

Bizarre lunar-like landscape with thousands of large stone "hoodoos."

This raised bulls-eye visible from space was the subject of an intense geologic controversy.

The headquarters of a secretive order is also a beautifully-designed park.

An extensive collection of ancient Egyptian artifacts and mummies.

This municipal playground was co-created by the father of one of the most playful characters ever.

Nevada's largest cactus collection stands outside a candy mogul's small factory.

The self-made house sculpture of an outsider artist who named himself "Chief Rolling Thunder."

Holding multiple historical boats and an entire 19th century village, this New England attraction is the largest maritime museum in the world.

An absolutely beautiful 200-foot stained glass installation traces the evolution of knowledge.

From the sky, a kaleidoscope of color brightens the grey landscape of the San Francisco Bay.

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

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

The awe-inspiring ship from the golden era of cruising has an incomparable history and a reputation as one of the world’s most haunted places.

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

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

Only hotel where you can legally launder money.

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

Decommissioned experimental solar facilities that pioneered solar energy technology.

The unbelievably opulent home built for an infamous newspaperman.

Home to the "Circus" trees created by Axel Erlandson.

It is locally loved and ridiculed for literally looking like poop.