Deco Modern sculptures of the people of the Pacific, cast for the 1939 Golden Gate International Exposition.

The neighborhood church casts a breast-shaped shadow that locals have come to call the “two o’clock titty.”

One of few lasting examples of the brief octagon craze that developed into folly.

A classic advertising icon immortalized in regal bronze.

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

A psychedelic labyrinth on the San Francisco bay.

This teeny-tiny park built by a San Francisco man in 1962 is mostly stairs.

A speck of nature and art in one of San Francisco’s most notorious neighborhoods.

A nondescript building that's been functioning as a speakeasy for nearly a century and a half.

The first lookout in Yosemite.

A little-known, but surprisingly large waterfall on the Little Truckee River in the northern Sierra Nevada.

The disdain for this dysfunctional dam is reflected in a giant pair of scissors painted on the concrete face.

A classically inspired temple in Redwood City.

The old Niles Canyon Aqueduct in the San Francisco Bay Area is a bemusing and secret trail through nature for wayward travelers.

This historic roadhouse has many tales to tell of San Francisco's early history.

The long, arduous journey of the stones of the Abbey of New Clairvaux.

Each winter this underground cave forms a dazzling ice palace.

Trails through lava-carved tube-caves display sparkling bacteria and a rich history.

Outposts of this restaurant chain were shaped like jaunty chapeaus.

Where a great scandal unfolded with a famous female revivalist at its center.

The largest collection of two headed animals in the world.

Apartment building was once posh playground to the Hollywood elite.

Drink a Guinness under the wings of Reagan's retired Air Force One in his presidential library.

World War II-era Nazi compound nestled in the Santa Monica hills.