San Francisco's most expensive hotel suite includes a secret passageway rumored to have been used by JFK.

One of the oldest producers of hand-folded fortune cookies still uses its original secret recipe.

Russian history in San Francisco.

Half of a house.

A library and museum dedicated to typography.

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

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

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

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

With the touch of a button, you can read a randomly selected short story.

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

The remains of a ruined mansion memorialize the 1906 earthquake.

Visible below the waves are memorials to the city's Gold Rush dead.

A modern mechanical planetary system, part of a 10,000 year clock.

The randomness of this wall of lava lamps helps encrypt up to 10 percent of the internet.

A collection of 20th-century automata, penny arcade games, and musical contraptions.

A shop full of natural curiosities, carnivorous plants, and costumed taxidermied mice.

Tiki luxury on Nob Hill.

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

A favorite haunt of dinosaur loving children and hallucinogen loving hippies alike.

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

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

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.