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

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

Abortion, prohibition, religion, war, and fear all play a part in the history of this idiosyncratic Pacifica castle.

A rococo retro-futurist future-rustic vernacular between yesterday’s tomorrow and the future that never was.

A watering hole where the options for seating include a bar, patio, or subterranean cave.

Hand-powered race of alternative forms of transportation.

Nursery with extensive collection of flesh-eating plants operated by the author of "The Savage Garden."

The largest Star Wars collection in the world is its own galaxy of collectibles.

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

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

The largest permanent Monopoly board makes one of the longest games even bigger.

There is no trying to fall in love with this Star Wars fountain, you just do or do not.

Get lost in this haunting fairytale art walk through a man-made eucalyptus grove.

This private residence was the template for one of the most beloved television homes of all time.

A historic hotel that made a cameo in Hitchcock's classic film has no intention of letting guests forget its fame.

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

This shop specializes in oddities and Victorian-inspired wonders.

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

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

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

A celebration of once forgotten materials.

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

9,000 square feet of vintage and modern mechanical toys, dioramas & sideshow curiosities.

The mysterious round rocks of Schooner Gulch.