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

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

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

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

A winding path built in secret on the edge of the continent.

Beneath the southern end of the Golden Gate Bridge is the “Gibraltar of the West Coast,” a fort built to protect the San Francisco Bay from naval attack.

A shop full of natural curiosities, carnivorous plants, and costumed taxidermied mice.

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

An essential stop before plundering, BYO Cutlass.

Colorful Native American paintings are hidden within this small cavern.

This unique bed and breakfast was first constructed during the 1800s by a Russian immigrant family.

Giant scissors seemingly stabbed into the side of a hair salon leave no question about the vocation of the owners.

California's largest steel arch bridge.

A water tower shaped like a giant coffee pot looms over a small Swedish village in Central California.

A B-17 bomber stands as a memorial to the residents of Tulare County who served in World War II.

The first safe in this California town had to hold all the gold.

Haunting and beautiful trees, doomed to die.

The unbelievably opulent home built for an infamous newspaperman.

The site of the one and only battle of Lord Dunmore's War.

This red-eyed chrome beast pays homage to the popular modern myth of West Virginia's insectoid monster.

Ohio's 19th-century communist micro-society.

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

This residential door allows San Francisco muggles a glimpse at the wizarding world.

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