A man-made island in scenic San Francisco Bay.

A collection of memorabilia from the Beat era in the back of a San Francisco bookstore.

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

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

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

An overlooked and unassuming engineering marvel.

Inside an old airplane hangar, friends and strangers alike play on a massive trampoline.

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

Tiki luxury on Nob Hill.

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

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

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

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.

Some of the tallest ancient American ruins continue to inspire awe and curiosity.

The stones that traveled from Spain to eventually become a holy place for San Francisco's nature worshippers.