Concrete strongholds stand guard over the Golden Gate.

The fossilized remains of ancient California redwoods.

A house built from trash known as the poor man's Hearst Castle.

Two rocks in a perpetual kiss and one of "the most romantic spot in America."

An alley covered with 20 years of bubble gum.

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

Oldest building in California still in use.

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

Fake rail crossings mark the site of an influential doctor's demise.

This eagle-topped spire remembers the military commander who snatched up California for the United States.

Two mammoth statues inspired by equally tall tales lure tourists to this roadside attraction.

A ruined hotel with an unlucky history and an eerie present.

The miraculous hydrant that saved the Mission District in 1906.

A vast city of the dead, where the deceased outnumber the living by more than a million.

California's oldest wind harp represents a historic piece of America's Danish history.

The rusting remains of the largest assembled WWII fleet on the West Coast.

A lighthouse built to save lives that took quite a few with its treacherous location.

A dentist's hated concrete colossi are now beloved icons of the community.

This former boomtown "island" is now submerged below Folsom Lake.

Forgotten and then destroyed by fire, this was once one of the largest saltwater swimming pools in the world.

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

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

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

This little museum has an exhibit devoted to the elusive forest denizens.