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

The southernmost outpost of the Russian Empire in colonial America.

Massive prehistoric mammals used these stones as oversized scratching posts.

A poignant memorial to a young boy whose death spurred a dramatic increase in organ donations in Italy—dubbed the "Nicholas Effect."

The neon signs from Las Vegas' past find their final resting place at this unusual graveyard.

The remains of a deserted steamboat sit rusting beside an old ferry pier and an abandoned train platform.

An abandoned Cold War missile radar site.

The sound of swaying stalks in this stunning grove has been named a governmentally recognized sound.

A 90-acre park on former landfill that hosts an annual kite festival.

An "anarchical" no man's land, complete with garbage sculptures and a hobo-run "Landfillian Library."

This Nevada lake holds its titular natural pyramid and, if the legends are true, a number of dangerous spirits.

One of the largest fleets of armored vehicles in the world, sitting out in the California desert.

A creepy steel gremlin has protected the Bay Bridge since 1989.

One of the last remaining Carpenter Gothic churches is situated on a wildflower conservatory overlooking the bay.

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

A living time capsule of the 1960s Richardson Bay water-front.

George Lucas donated this park to honor the birthplace of his two biggest movie franchises.

Of all the origin stories for weed's secret code, this one likely has the goods.

Frank Lloyd Wright died a year before construction on his largest public project even began.

Playable, historic pinball machines fill this Alameda museum.

The unedited photograph called "Bliss" has graced the screens of over a billion computers.

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

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

Each summer, the migratory bats living beneath the bypass form "batnadoes" at dusk.