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 remains of a ruined mansion memorialize the 1906 earthquake.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

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

Furniture tries to escape an abandoned building in San Francisco.

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

The key to turning shifting dunes into the green oasis of Golden Gate Park.

San Francisco's newly reopened hands-on science museum.

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

San Francisco's urban bison herd has persisted in the face of extinction, development, and disease.

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

The fossilized remains of ancient California redwoods.

The bomb-ravaged remains of of a colossal Neptune.