Barely visible foundations remain where Stow Lake’s “observatory” once welcomed visitors.

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

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

The legendary statue-hating superintendent of Golden Gate Park is honored with... a statue.

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

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

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

Get lost in this haunting fairytale art walk through a man-made eucalyptus grove.

San Francisco’s condensed garden of incredible plant growth.

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

A famous alternative culture epicenter and where Joplin serenaded young hippies.

A rococo retro-futurist future-rustic vernacular between yesterday’s tomorrow and the future that never was.

27-room home built with the fortune of a sugar magnate.

Prone to disastrous fires, the city of San Francisco has the Guardian, a fireboat gifted by residents, to watch over them from the bay.

Gold Rush-era tombstones line the park's paths.

Not merely a museum – but a whirring powerhouse that offers a subterranean peek into the heart and soul of cable car operations.

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

Its buzzing collection honors vibrator history.

Faceless white figures loom over the city from the rooftop.

The neighborhood church casts a breast-shaped shadow that locals have come to call the “two o’clock titty.”

A tiny theater hidden in an alley plays a constant stream of short silent films for anyone willing to peer through the peephole.

Since 1973, this block has been home to the most concentrated collection of murals in San Francisco.

The miraculous hydrant that saved the Mission District in 1906.

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