An underground mansion with fruit-bearing trees and grapes growing beneath the surface of central California.

Remnants of the United States's largest accidental oil spill still mar a California valley.

Hidden in the back of a disused small town hotel is a dive bar shellacked with over a million pennies.

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

Travelers leave tea kettles in a remote part of Death Valley as part of a mysterious, decades-old tradition.

The liveliest ghost town in the state.

In the country around Buttonwillow, California, a marker commemorates a revealing moment in the story of a water colony from the fictional Kcymaerxthaere that sought independence.

The tragedy of the Japanese internment camps is remembered here by a stark "Soul Consoling Tower."

The hundreds of movies and television shows shot in this high desert town are commemorated in a unique museum.

The first life claimed by this record-breaking peak wasn't lost to exposure or a fall but rather lightning.

One of the last free public hot springs is decorated with hippie art.