A playing field for a popular French past time can be found tucked away in a quiet corner of Golden Gate Park.

The first fresco Diego Rivera painted in the United States can be found in the former San Francisco Stock Exchange.

A shining, cold, black organ lies in San Francisco's financial district.

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

Guns that have been defending San Francisco since 1904.

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

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

This one-block alleyway is stuffed with street art that is colorful, cultural, and intensely political.

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

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

San Francisco's most expensive hotel suite includes a secret passageway rumored to have been used by JFK.

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

Tenacious mummies survived dental problems, eternal entombment, and more than their fair share of devastating fires.

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

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

Golden Gate Park's historic collection of plants.

A 300-ship graveyard, with a few still visible at low tide.

Visible below the waves are memorials to the city's Gold Rush dead.

A modern mechanical planetary system, part of a 10,000 year clock.

The randomness of this wall of lava lamps helps encrypt up to 10 percent of the internet.

The tea room that pushed the boundaries of adorable straight into...we can't find the words.

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

An essential stop before plundering, BYO Cutlass.

The one-time watch house for incoming ships at the Golden Gate now stands abandoned and hidden in trees.