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

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

This stretch of beach along California's central coast is a busy highway for the largest seal in the northern hemisphere.

A tiny survivor of the Donner Party disaster.

A small, peaceful sculpture garden with a grim memorial to a disaster that took place a few blocks away.

This whimsical seashell-shaped place of worship was designed to blend into its surroundings.

The Zalud family experienced a number of tragedies in one decade, giving rise to rumors that the 19th century house is haunted.

A herd of 150 bison live on California's Santa Catalina Island and are at the heart of an ongoing debate between environmental protection and economic expansion.

A pair of pure white felines guard the entrance to a spot of California real estate established as an artist's haven.

A statue commemorate Tommie Smith and John Carlos's brave protest at the 1968 Olympics, a watershed moment for civil rights.

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

One of the largest helium balloons in the U.S. is a 112-foot ginormous orange.

This California estate was either haunted by ghosts or the Marx brothers.

A Biblically-based Natural History Museum.

Not truly a ship nor a building, the Navy's first and last "landship" is now abandoned due to clerical issues.

Massive prehistoric mammals used these stones as oversized scratching posts.

This desert oddity hides in plain sight thanks to a cartographic error and a desert explorer with a punny sense of humor.

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

Subterranean house made out of a grain silo, located in the Santa Cruz Mountains.

The capitol city's oldest existing cemetery.

Fans of the spicy bright-red sauce can tour where it's made.

The remnants of a failed socialist commune can still be found just off a California highway.

An ominous concrete cube cuts a dystopian silhouette atop this California mountain.

Elephant seals and sea lions have turned the abandoned buildings on this island into their endangered love shack.