In all of the 29 years it was in operation, no prisoners ever escaped successfully... or so they claim.

Bring your own cardboard to the slippery slopes of concrete hidden in a neighborhood park.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

A mysterious castle built as a monument to lost love.

Found: Garden of Eden in Miami-Dade County, Florida.

From the Difference Engine to the Cray-1, all under one roof.

This grinning pup statue is all that's left of what was once a ubiquitous Bay Area diner chain.

The lighthouse central to the 1980s horror classic "The Fog" is, in fact, located in one of the foggiest areas of the Pacific Coast.

A massive sea stack famous for its appearance in The Goonies.

In the middle of downtown Brooklyn lies a 165 year old secret hidden right below the surface (closed to the public indefinitely).

The remnants of two World's Fairs are here, complete with a 12-story globe, a mini-Manhattan, and a UFO-shaped pavilion.

Elevated freight railway turned wildly successful urban park.

A Romanesque sanctuary of calm amid the bustle of downtown Los Angeles.

60 feet of towering steel balances gracefully.

A few iconic structures are all that remain of America’s first outdoor shopping mall.

An historic and oft-filmed spot for musclebound iron pumpers on the Pacific coast.

A three-story, three-dimensional hobo clown in a tutu welcomes CVS shoppers.

L.A.'s oldest operating bowling alley is a beautifully restored homage to its speakeasy days.

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

A faux European lane smack dab in downtown L.A.

After starting as a whimsical tourist attraction that eventually found its way to ruin, these renovated canals offer a lush and exotic locale on the Pacific Coast.

The private clubhouse for the members of the Academy of Magical Arts.

Scores of vintage street lamps shine along L.A.’s Miracle Mile.

These delicate buggers are some of the rarest fossils that have bubbled up from the Tar Pits.