The most accurate timepiece in the world.

The "lovely red Vega" of the legendary record-settling pilot.

Prone to disastrous fires, the city of San Francisco has the Guardian, a fireboat gifted by residents, to watch over them from the bay.

A promotional sun clock on the site of San Francisco's great raceway.

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

A tribute to the life and work of the beloved "Peanuts" cartoonist.

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

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

Downieville's largest Gold Rush structure still standing has one of the longest bars in California.

Pillars made of 700 pieces of luggage climb to the ceiling of Sacramento Airport's baggage claim.

A fine mixture of the old and the new topped with an art deco neon spire.

The Empire Mine is "one of the oldest, largest, deepest, longest and richest gold mines in California."

This 19th century hydroelectric powerhouse was the first of its kind.

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