A storybook European village in Berkeley.

A mysterious painting of the self-declared Emperor of the United States watches over a local hof-brau.

A walk-in working camera obscura produces 360-degree live images of the San Francisco coast.

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

The one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.

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

A winding path built in secret on the edge of the continent.

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

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

A psychedelic labyrinth on the San Francisco bay.

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.

The grand, column-fronted, sculpture-adorned home of the ambitious digital library.

A hidden subterranean installation offers a view of the sky.

A quiet marker in memory of local men and women lost in WWI.

The remains of a 12th-century chapter house in Golden Gate Park.

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

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

A masterpiece in Golden Gate Park by virtue of the artist’s debt.

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

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

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

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

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

A shining, cold, black organ lies in San Francisco's financial district.