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

A herd of 150 bison live on California's Santa Catalina Island and are at the heart of an ongoing debate between environmental protection and economic expansion.

An antique store houses the last operational diner from the defunct department store chain.

Nationwide network of co-ownership underground catastrophe shelters.

Its dark depths conceal millions of rare, delicate crystal formations.

This enormous World War II relic is one of the largest wooden structures in the world.

NASA's leading space science lab started by a co-founder with deep ties to the occult.

One of the best absinthe distilleries in the United States.

Hidden among the multi-million dollar mansions in the Santa Cruz hills is a sanctuary for troubled birds.

This sun-scorched lakebed contains samples of half the natural elements known to humankind.

Faceless white figures loom over the city from the rooftop.

A popular winter vacation destination for migrating monarch butterflies.

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

International delicatessen has been owned and operated by the same family for more than 110 years.

Where religious effigies, magic soaps, and occult candles are brought to customers at wholesale prices.

A watering hole where the options for seating include a bar, patio, or subterranean cave.

Home to secret Eastern Bloc spy equipment and the largest stretch of the original Berlin Wall outside of Germany.

The longest burning light bulb in the world.

The key to turning shifting dunes into the green oasis of Golden Gate Park.

An alley covered with 20 years of bubble gum.

The cobbled together compound of a deceased artist which now serves as a filming location.

Once the gateway to the utopian dream-village of a Civil War embalmer.

Nose around a unique collection of more than 300 natural aromas used to craft perfume fragrances.

The only visible piece of San Francisco's most famous shipwreck.