Forgotten and then destroyed by fire, this was once one of the largest saltwater swimming pools in the world.

A brooding mansion of clinker brick stands out among the Victorian houses of Pacific Heights.

Appropriation-friendly collection of books, periodicals, and more.

Alleyway plaque commemorating the death of a fictional character in The Maltese Falcon, not far from the author's home.

Russian history in San Francisco.

Longtime headquarters of controversial boys' club for the world's wealthiest and most powerful.

San Francisco's oldest operating hotel, with a Victorian atmosphere and a "haunted" fourth floor.

Tenacious mummies survived dental problems, eternal entombment, and more than their fair share of devastating fires.

Half of a house.

This partially buried wreck is one of the most complete of its kind but is only revealed when the sea allows.

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

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

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

An overlooked and unassuming engineering marvel.

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

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

The remains of a ruined mansion memorialize the 1906 earthquake.

Big gun installations, built over a massive cemetery, now abandoned & hidden in trees.

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

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

A shop full of natural curiosities, carnivorous plants, and costumed taxidermied mice.

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

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

Tiki luxury on Nob Hill.