This star-studded Old Hollywood restaurant is where fettuccine Alfredo made its United States debut.

The L.A. Zoo has a secret garden of rare bootleg cycads, a palm specimen dating back 280 million years.

The site of murders and Satanic cult gatherings.

This naturally heated mountainous creek has created a group of neon blue pools of potentially deadly boiling water.

This traditional garden in the San Fernando Valley doubled for Star Fleet Academy, and is irrigated entirely by wastewater.

The lowest point in North America is home to an undrinkable pool surrounded by fields of geometric salt flats.

An unfortunate geological resemblance to Satan has labeled this Pasadena gorge as a passage to the underworld.

The "Fun Spot of the Desert" is now a haunting ruin, and a reminder that putting a water park in a desert is a bad idea.

Experience a quartz crystal sound bath inside a storied, all-wood sound-chamber.

This ultra-modern home clings to the slope of the Hollywood Hills on a precarious stilt.

This massive redwood tree has a hole in the base big enough to drive through.

The largest permanent Monopoly board makes one of the longest games even bigger.

A Swedenborgian glass church surrounded by redwoods sits perched atop a massive landslide area.

Magical-looking cottages that inspired one of the most famous animated films ever.

The final resting place of a space program monolith.

In a city filled with Frank Gehry buildings, one stands out as one of the architect's weirder works.

This rare example of a "tidefall" is a spectacular drop from the cliffs down onto the beach.

An extraordinarily ornate museum in San Diego holds wondrous anthropological treasures.

Beautiful Victorian buildings from L.A.'s forgotten architectural past.

Aqueducts have dramatically changed this old lake, now home to tufa towers and its very own species of tiny brine shrimp.

Once thought to be the oldest living tree in the world, Methuselah was germinated before the Egyptian pyramids were built.

The now-abandoned tunnels were built for the transcontinental railroad on the route where the first wagon train entered California.

This brightly made over hotel hides decades of suicide, serial killers, and mysterious deaths.

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