The American Home, Re-imagined.

This 1920s masterpiece of French Quarter architecture hides a secret tunnel used by Albert Einstein.

Suburban observatory was personal lab of the father of modern astrophysics.

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

Arcadia is home to a haven for nature geeks and 80s TV lovers alike.

A relic from a forgotten bakery chain still spins atop a diner.

A museum dedicated to restoring vintage aircraft, located at a working airport.

Abandoned bridge hidden deep in the San Gabriel Mountains.

An unexpected and peaceful oasis on a hillside.

“It's the quality” (but probably also the drive-through donut tunnel) that has attracted diners since 1968.

A Biblically-based Natural History Museum.

North America's largest accredited model railroad museum.

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

This San Diego museum is dedicated to preserving women’s historic achievements.

A couple turned their front yard into an artistic masterpiece.

San Diego's most historic and haunted home.

Behind this beachfront shop lies a spectacular, colorful sea cave with an equally colorful past.

This little blue house pokes out over the campus of UC San Diego, seven stories high.

Elevated freight railway turned wildly successful urban park.

A theme park that suffered massive flooding during Katrina was abandoned, and now proves irresistible to trespassing explorers.

It should come as no surprise that the best view of the Hollywood sign is from Batman's lair.

An enormous, inside-out glass globe built in 1935.

This abandoned subway station beneath the Waldorf-Astoria hotel is allegedly used to secretly transport presidents.

The legendary building that needed ghostly approval before being built.