Faceless white figures loom over the city from the rooftop.

A famous alternative culture epicenter and where Joplin serenaded young hippies.

This shop specializes in oddities and Victorian-inspired wonders.

This 19th-century church is now a popular roller rink.

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

A peculiar mansion built by the troubled heir to the Winchester Rifle Company fortune.

A brooding mansion of clinker brick stands out among the Victorian houses of Pacific Heights.

A pair of mutilated bronze octopuses slump at the base of the monument honoring California's admission to the U.S.

This one-block alleyway is stuffed with street art that is colorful, cultural, and intensely political.

Early prototype for Frank Lloyd Wright's Guggenheim.

This residential door allows San Francisco muggles a glimpse at the wizarding world.

The restored and active Victorian-era final resting place of San Francisco.

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

The oldest burial ground in the city, final resting place of city founders, Ohlone natives and murderers alike.

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 one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

Its buzzing collection honors vibrator history.

The only theatre in the world constructed specifically for sound movement.

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

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

A 140-year-old castle with underground caves hidden in San Francisco.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

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