The first fresco Diego Rivera painted in the United States can be found in the former San Francisco Stock Exchange.

This tall and trim architectural oddity is one of the skinniest buildings in San Francisco.

Built in 1906, this unique building was the first Hindu temple in the United States.

Faceless white figures loom over the city from the rooftop.

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

The last used bookstore in Downtown San Francisco is one of the smallest bookstores just about anywhere.

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

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

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

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

The historic building's ornate stained glass fixture has survived the devastating 1906 earthquake, ensuing fires, and multiple redevelopment attempts.

Early prototype for Frank Lloyd Wright's Guggenheim.

A former hardware store near Yerba Buena is the official home of California's history.

A pair of mutilated bronze octopuses slump at the base of the monument honoring California's admission to the U.S.

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

The second building of its name to occupy this location might be the finest flatiron building in San Francisco.

One of few lasting examples of the brief octagon craze that developed into folly.

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

An off-the-beaten-path place to literally hang beneath Milwaukee's Holton Street Bridge.

Strange red rock formations that have been attributed to a higher power for hundreds of years.

Two small markers remember the Alamo's feline protectors.

Legend has it the commander of the defenders drew a fateful line in the dirt with his sword just before the final battle.

Texas's oldest bakery serves authentic German pastries, including legendary strudel.

A place to eat for on-the-run agents and espionage enthusiasts.