San Francisco’s century-old Christmas Tree.

The neighborhood church casts a breast-shaped shadow that locals have come to call the “two o’clock titty.”

This 19th-century church is now a popular roller rink.

Only hotel where you can legally launder money.

An elaborate gift from Claus Spreckels is now a piece of San Francisco history.

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

Since 1973, this block has been home to the most concentrated collection of murals in San Francisco.

The giant pair of sexy legs sticking out the window of this costume store have become its main draw.

Golden Gate Park's historic collection of plants.

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

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

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

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

The oldest burial ground in the city, final resting place of city founders, Ohlone natives and murderers alike.

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

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

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

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

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

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

This shop specializes in oddities and Victorian-inspired wonders.

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

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

The spot in the Mile-High City that's exactly 5,280 feet above sea level (at least for now).