Staircase winds down the side of Telegraph Hill through gardens, wild parrots flying overhead.

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

The seawater playground of gilded-era San Francisco burned to the ground in 1966.

Big gun installations, built over a massive cemetery, now abandoned & hidden in trees.

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

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

Guns that have been defending San Francisco since 1904.

The last remaining relic of San Francisco's glittering 1915 Panama Pacific Exposition.

A monument to the love people have for their pets.

At the base of the Golden Gate Bridge, a small sign basically begs for a high-five.

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

Internationally-recognized arts center housed in a century-old former military barracks.

Concrete strongholds stand guard over the Golden Gate.

The lighthouse central to the 1980s horror classic "The Fog" is, in fact, located in one of the foggiest areas of the Pacific Coast.

The southernmost outpost of the Russian Empire in colonial America.

The haunting ruins of Jack London's dream house.

Believe it or not, this is the final resting place of the man who created the Odditorium.

A tribute to the life and work of the beloved "Peanuts" cartoonist.

340 bicycles, 65 feet high.

Monumental sculptures of Patrick Amiot, constructed from debris, detritus, and determination.

California's own medieval Italian castle, authentic down to the 300-year-old iron maiden in the dungeon.