A 200-year-old building in the French Quarter that was to be Napoleon's home in the New World.

The only rotating bar in New Orleans has been slowly spinning since 1949.

Chevron maintains one “Standard” brand station per state so it doesn’t lose the trademark.

These subterranean storage areas hold emergency water reserves.

A monumental cross hides in the trees in Golden Gate Park.

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

A garden oasis filled with flowers mentioned in the works of William Shakespeare.

The miraculous hydrant that saved the Mission District in 1906.

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

Golden Gate Park's historic collection of plants.

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

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.

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

A pair of slides and a tree-lined stair corridor have been an urban oasis for nearly 40 years.

Carnivorous plants, medieval aphrodisiacs, and the largest original wood structure glass conservatory in the western hemisphere.

Relics of the 1894 Midwinter Exposition continue to delight visitors today.

In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

A huge musical instrument played by the ocean.

The once-abandoned 140-year-old hotel used in the movie "In Dreams."

One of 100 “Whaling Wall" murals painted in 13 different countries by a renowned marine life artist.