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

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

Furniture tries to escape an abandoned building in San Francisco.

The miraculous hydrant that saved the Mission District in 1906.

Art from the latest counter-culture; kids who dye their hair blue and believe the future will be a post-apocalyptic water world.

These subterranean storage areas hold emergency water reserves.

This shop specializes in oddities and Victorian-inspired wonders.

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

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

Its buzzing collection honors vibrator history.

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

This subtle Berkeley paving stone actually marks off a lawless tube of air that extends into space.

Under the right circumstances, this waterfall in Yosemite briefly turns a luminescent fiery orange.

Quite simply the largest tree in the world (by volume).

Built in 1512, the oldest cathedral in the Americas.

Recovered from the brink of extinction, at home in the Financial District.

A man-made island in scenic San Francisco Bay.

From the sky, a kaleidoscope of color brightens the grey landscape of the San Francisco Bay.

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

Only hotel where you can legally launder money.

An enormous illuminated figure dances on the Las Vegas strip.

Seven ceramic sculptures are scattered around this California college campus.

An expansive and intricately restored mansion remains from over a century ago--and so do its ghosts.