A B&B on a Victorian lighthouse station in San Francisco Bay.

Half of a house.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

An artsy hidden staircase leads to breathtaking views of San Francisco.

A miniature view of the park, caught in time.

A library built during San Francisco's pioneer times is a student's retreat, bibliophile's sanctuary, and chess player's delight.

An unassuming grey box sitting on San Francisco's Pier 17 is a "sky diary" of the coastal city's temperamental weather.

The tea room that pushed the boundaries of adorable straight into...we can't find the words.

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

A classically inspired temple in Redwood City.

Neither Spanish settlers nor anyone since has been able to tell who built these strange California rock walls.

A winding path built in secret on the edge of the continent.

A working model of the entire San Francisco Bay and much of the Sacramento River Delta, complete with regular tides that change every 14 minutes.

Law-protected wreckage serves as a peculiar memorial for an almost forgotten World War II tragedy.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

Furniture tries to escape an abandoned building in San Francisco.

This quaint archive of the silent era preserves and pays homage to a seminal moment in film history.

San Francisco Bay's ghost town.

An archive of nearly every day of Buckminster Fuller's life.

If you are looking for a used Russian battery, Chinese Ham Radio or other electronic oddities this Flea Market is a good place to start.

There are no crying babies in this neck of the woods.

Apple memorabilia in an undisclosed warehouse, hidden for undisclosed reasons.

The former Naval shipyard is open for exploring - mostly.

Historical trolley restoration and operation at History San Jose, Kelly Park.