A miniature view of the park, caught in time.

An enormous artwork that colorfully celebrates over 150 years of US military achievements.

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

These subterranean storage areas hold emergency water reserves.

This giant head is all that remains of a once proud statue that survived an earthquake but not a fall off of a wagon.

Thirteen trees representing the original thirteen colonies were planted with soil from historic Revolutionary battlefields.

Guns that have been defending San Francisco since 1904.

Noble beasts perhaps, but not the Emperor's dogs.

Faceless white figures loom over the city from the rooftop.

27-room home built with the fortune of a sugar magnate.

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

Forgotten and then destroyed by fire, this was once one of the largest saltwater swimming pools in the world.

A masterpiece in Golden Gate Park by virtue of the artist’s debt.

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

The only visible piece of San Francisco's most famous shipwreck.

Russian history in San Francisco.

A free, public museum dedicated to the fascinating science of sight.

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

A famous alternative culture epicenter and where Joplin serenaded young hippies.

A man-made island in scenic San Francisco Bay.

Barely visible foundations remain where Stow Lake’s “observatory” once welcomed visitors.

A brooding mansion of clinker brick stands out among the Victorian houses of Pacific Heights.

Amazing meticulous gardens of personal wood carvings, Hydrangea, Canna, and many other flowers.

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