The highest dunes in California are the most likely place in the area to hear the Singing Sands.

A couple turned their front yard into an artistic masterpiece.

An overlooked and unassuming engineering marvel.

An unreal vintage shop that wears its dadaist influence on its zombie fish.

A volcanic tunnel illuminated by natural skylights offers a shaded respite from the desert sun.

These millipedes glow not out of attraction, but as a not-too-subtle warning.

Acres of natural wonders left behind by a socialite-turned-gardener.

Golden Gate Park's historic collection of plants.

Stroll the grounds built by murder, suicide, and dirty oil money at one of Hollywood's most filmed mansions.

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

The abandoned personal amusement park of the King of Pop.

Nancy Thompson's Home from "A Nightmare on Elm Street."

This concrete tangle of square pipes has stood as a proud thorn in the city's side since the '70s.

A multimedia experience that chronicles the atrocities of racism.

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

San Franciscans leave gifts and messages for the magical beings that live behind the tiny, mysterious door installed on a tree in Golden Gate Park.

One of the ghostly stops along Route 66.

San Diego's most historic and haunted home.

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.

The site of murders and Satanic cult gatherings.

The ghost town that ended up on Ebay.

Small museum packed with artifacts recovered by the man rumored to be the real-life inspiration for Indiana Jones.

The largest drain hole in the world.

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