Social saloon from a scrapped trans-Pacific 19th century steamer.

One time home to turn of the century explosives, now hidden under the Bay Bridge.

An art supply shop holds the secrets of this quiet neighborhood's raucous Barbary Coast past.

The century-old bell and clock tower at UC Berkeley is the third-tallest in the world, and has fossils.

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

The highest dunes in California are the most likely place in the area to hear the Singing Sands.

One of the last free public hot springs is decorated with hippie art.

This mountaintop beacon is only lit three times a year but shines like some kind of all-seeing eye.

Elephant seals and sea lions have turned the abandoned buildings on this island into their endangered love shack.

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

The sun acts as a key that only fits this giant keyhole twice a year.

Two men, two visionaries of Venice Beach, one little hotel that smells like cookies.

Sunset-colored dunes of volcanic ash make taking a poor photo impossible.

Millions of years of oxidation make a drive down this winding Death Valley road surprisingly colorful.

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

A private home built to resemble the shape of a microscopic creature.

Built by the inventor of the radio, this abandoned hotel has housed early radio employees, military men, and a dangerous cult.

Adolph Sutro's little-known, geographically inaccurate, deprecated monument.

San Franciscans leave gifts and messages for the magical beings that live behind the tiny, mysterious door installed on a tree in Golden Gate Park.

The miraculous hydrant that saved the Mission District in 1906.

Half of a house.

Spiral labyrinth hidden in the hills above Oakland, CA.

A playground built by the kids that is a child's wonderland, and a helicopter parent's nightmare.

Travelers exchange letters with woodland creatures at this mini post office.