A statue honoring 44 continuous years of greeting passing ships.

The beautiful behemoth is one of the largest trees of its kind in the United States.

Acres of natural wonders left behind by a socialite-turned-gardener.

A popular winter vacation destination for migrating monarch butterflies.

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

Once close to extinction, there is no shortage of elephant seals on the beaches of Año Nuevo State Park.

The space-age building is home to one of the few remaining rotating restaurants in America, and the only one that inspired a 1980s sitcom.

A burnt orange monolithic dome structure perched on a hillside near Interstate 280.

Home to the "Circus" trees created by Axel Erlandson.

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

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.

The unbelievably opulent home built for an infamous newspaperman.

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.

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

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

A "gravitational anomaly" located in the redwood forests just outside of Santa Cruz, California.

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.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.

Its buzzing collection honors vibrator history.

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