An elaborate gift from Claus Spreckels is now a piece of San Francisco history.

An Old West film set seen in countless TV shows and movies is open for the public to explore.

A glimpse into the lives of the the Miwok and Paiute people in Yosemite National Park.

This little valley along Highway 1 is engulfed by thousands of lilies during the spring season.

An Airy Would-Be Solution to a Housing Shortage.

Haunting and beautiful trees, doomed to die.

A tree grown from astronaut seeds which were exposed to cosmic rays.

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

Church and home-museum of a 1920s female revivalist preacher with a very sordid past.

Colorful Native American paintings are hidden within this small cavern.

The dramatic upward-curving roof is one of the most iconic examples of Googie architecture that still stands today.

This peaceful garden is hidden on the grounds of a spiritual organization founded by a pioneer yogi.

Barely visible foundations remain where Stow Lake’s “observatory” once welcomed visitors.

A cobblestone alley with an interesting past.

A Bicycle Path in the Sky.

The world's largest wooden trestle stretches across this desert canyon in Anza-Borrego Desert State Park.

L. Frank Baum wrote part of the "Wizard of Oz" series in this wooden Victorian beach resort.

The largest dune field in the Mojave offers a chance of hearing the 'singing sands.'

A man-made island in scenic San Francisco Bay.

Ancient human, animal, and geometric figures drawn in the earth.

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

An expansive book store, art gallery, and curio shop with wares ranging from tarot cards to novelty socks.

This print shop boasts one of the largest pinball arcades in San Francisco.

The lighthouse central to the 1980s horror classic "The Fog" is, in fact, located in one of the foggiest areas of the Pacific Coast.