Centuries of crashing waves carved out this small hole in the rock, which lights up at certain parts of the year.

Haunting and beautiful trees, doomed to die.

This lonesome Monterey cypress has survived centuries of wind, salt, and at least one attempt at arson.

Two rocks in a perpetual kiss and one of "the most romantic spot in America."

Enormous crabs, bioluminescent jellies, and other amazing creatures from the ocean’s depths—some of which are in an aquarium for the first time ever.

One of the most elaborate displays of Jellyfish is on display at the aquarium.

A classically inspired temple in Redwood City.

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

The Internet Age began with a transmission from this biker bar.

Rodin's famous depiction of Dante's 'Inferno', amidst a sculpture garden of many of his other works.

A sudden forest of traditional Papua New Guinean art works is hidden in a corner of Stanford University.

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

Concrete strongholds stand guard over the Golden Gate.

This lighthouse has been guiding shipping into the Golden Gate since before the American Civil War.

Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.

Depicting scenes of everyday life - and specific individuals - in Great Depression era San Francisco.

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

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

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

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

Nestled in the heart of San Francisco’s bustling Financial District stands a unique homage to the Mayan and Beaux Arts.

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

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

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