A promotional sun clock on the site of San Francisco's great raceway.

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

Prone to disastrous fires, the city of San Francisco has the Guardian, a fireboat gifted by residents, to watch over them from the bay.

Once the largest windmill outside of Holland, with enormous 114 foot sails.

Recovered from the brink of extinction, at home in the Financial District.

Art from the latest counter-culture; kids who dye their hair blue and believe the future will be a post-apocalyptic water world.

These subterranean storage areas hold emergency water reserves.

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

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

Join the circus for a few lessons to learn clowning, acrobatics, and Chinese contortion.

California's most comprehensive horticultural library.

Golden Gate Park's historic collection of plants.

The remains of a 12th-century chapter house in Golden Gate Park.

San Francisco’s condensed garden of incredible plant growth.

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

Early prototype for Frank Lloyd Wright's Guggenheim.

This shop specializes in oddities and Victorian-inspired wonders.

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

An overlooked and unassuming engineering marvel.

The oldest lawn bowling club in the United States.

Olfactory delights in San Francisco's Botanical Gardens.

A walk down memory lane in the heart of one of San Francisco's most notorious neighborhoods.

The stones that traveled from Spain to eventually become a holy place for San Francisco's nature worshippers.

Gold Rush ship-turned-hotel buried underneath San Francisco's financial district.