A huge musical instrument played by the ocean.

A winding path built in secret on the edge of the continent.

More than 700 species live within this murky marvel of a swamp on California's coast.

This concrete ship has had four careers - World War I tanker, floating amusement park, fishing pier, and artificial reef.

This controversial depiction of the "Founder of California" looks as though it was sculpted from mashed potatoes.

A comprehensive collection of Pez dispensers.

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

Once close to extinction, there is no shortage of elephant seals on the beaches of Año Nuevo State Park.

An ominous concrete cube cuts a dystopian silhouette atop this California mountain.

A statue commemorate Tommie Smith and John Carlos's brave protest at the 1968 Olympics, a watershed moment for civil rights.

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

A pair of pure white felines guard the entrance to a spot of California real estate established as an artist's haven.

The largest permanent Monopoly board makes one of the longest games even bigger.

An extensive collection of ancient Egyptian artifacts and mummies.

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

A giant chess set, minus the psychedelic drug trip.

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.