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

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

A huge musical instrument played by the ocean.

Once the fastest ship from San Francisco to Tahiti, the Galilee now lays in pieces in three different cities.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

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

An elaborate gift from Claus Spreckels is now a piece of San Francisco history.

A garden oasis filled with flowers mentioned in the works of William Shakespeare.

Golden Gate Park's historic collection of plants.

An artsy hidden staircase leads to breathtaking views of San Francisco.

Reverend Franzo Wayne King administers spiritual enlightenment through the music of the jazz legend.

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

The century-old bell and clock tower at UC Berkeley is the third-tallest in the world, and has fossils.

Created in 1972, the famous sculptor's intricately detailed monument to San Francisco is overflowing with city landmarks.

This concrete ship has had four careers - World War I tanker, floating amusement park, fishing pier, and artificial reef.

This old-world mansion with lush gardens is a gem in the heart of Silicon Valley.

A trail weaves through the verses of a poem illustrated by stone sculptures inspired by Native American pictographs.

Hidden among the multi-million dollar mansions in the Santa Cruz hills is a sanctuary for troubled birds.

This redwood is a historic landmark, a town’s namesake, and the dancing sideline symbol of Stanford University.

A hidden world of exotic succulents and cacti.

Guarded by the Angel of Grief, the Stanford family tomb attracts an odd mix of halloween revelry and somber contemplation.

The world's first permanently occupied mountain-top observatory continues to report on the stars.

This odd California folly seems like it was almost designed to accumulate urban legends.

This airfield played a key role in both World War II and the Cold War.