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

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

This turn of the century masterpiece has a mysterious goaty interloper.

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

San Francisco's oldest surviving monument and meeting place for 1906 survivors.

A still functioning vaudeville carousel that has operated for over a century boasts a colorful menagerie and past.

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

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

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

Golden Gate Park's historic collection of plants.

San Franciscans leave gifts and messages for the magical beings that live behind the tiny, mysterious door installed on a tree in Golden Gate Park.

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

The remains of a ruined mansion memorialize the 1906 earthquake.

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

The tea room that pushed the boundaries of adorable straight into...we can't find the words.

A modern mechanical planetary system, part of a 10,000 year clock.

Visible below the waves are memorials to the city's Gold Rush dead.

A 300-ship graveyard, with a few still visible at low tide.

The randomness of this wall of lava lamps helps encrypt up to 10 percent of the internet.

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

An essential stop before plundering, BYO Cutlass.

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

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

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