This former stomping grounds of the most eminent astronomers of the early 20th century.

About 80% of all U.S. avocados are descendants of Rudolph Hass's glorious tree.

Explore an early California pioneer's rancho hidden in LA's manufacturing hinterland.

Once a place of peaceful repose, this sanitarium now faces an uncertain future.

The most unique castle in all of Southern California, entirely constructed from repurposed materials.

The last Americana on Route 66.

Built by one man in the '20s, this site is now a museum representing the Great Basin cultures.

A dry lake is what remains of a community founded on a real estate scam.

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

Abandoned Air Force base that has fallen into disrepair.

Hundreds of trees made from glass bottles make up this forest on Route 66.

These colossal desert barcodes have been fine-tuning spy satellites for decades.

Etched into a dry lake bed, this massive directional indicator is accurate without magnets.

Finale of "William Tell Overture" can be heard as drivers pass over grooves in the road.

Each year these high desert hills are absolutely covered with poppy flowers in a surreal show of nature.

This serene oasis in an affluent Los Angeles neighborhood holds some of Gandhi's ashes and got Elvis into Eastern Philosophy.

You don't want to get caught in this trap--or do you?

A strange mishmash of ruins and abandoned structures hint at the park's many lives.

A performance hall at the American Jewish University moonlights as a sci-fi film location set.

An eccentric folk art landmark made out of discarded bottles by an inspired "grandma."

The White House Situation Room was taken apart in 2006 and shipped to the Ronald Reagan Presidential Library.

From Japan to Italy, this California park explores the world's cultures through their gardens.

A basement full of treasures lies beneath this inn that has worn many hats throughout its 140+ years.

This Southern Californian Conservation Center is home to singing and howling apes.