This huge, disused viaduct is now a crumbling concrete underworld of covered in years of graffiti.

This permanent exhibition celebrates the finest of our heartless automatons both real and fictional.

One of the steepest streets in the United States makes an intriguing challenge for cyclists.

A giant ball made from pieces of an old Jeep.

This icon of the Atomic Age now lays dormant.

Color-coded signs direct drivers on a network of routes designed to avoid Pittsburgh traffic.

The house that Frank Lloyd Wright "(shook) out of his sleeve at will" at the age of 86.

An island graveyard with spectacular views of the Caribbean.

Beach instrument turned bed and breakfast.

Spectacular mineral formations fill these caves, which have been used for everything from smoking meat to stashing illicit liquor.

The Pennsylvania shopping center was once the setting for the 1978 film, "Dawn of the Dead."

A giant time capsule not scheduled to be cored until 2040.

In the parking lot of a fast food restaurant, a statue memorializing a prolific bull elephant.

A dozen U.S. presidents have stayed at the historic resort, which was known as James Buchanan’s “Summer White House” from 1857-1861.

Hollywood's most famous landmark, the "temporary" sign that has stood for decades longer than intended.

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

This futuristically sylvan church is a glass-enclosed marvel of modern architecture.

The first American department store, and home to the largest operating musical instrument in the world.

An abandoned stretch of highway, deteriorating next to the operational one.

This rural community has attracted both scientists and techno-refugees due to its federally-mandated lack of technology.

Near-constant high winds deform the trees on Spruce Knob, the highest point in West Virginia.

A local prank turned town icon.

A tradition unlike any other, this marks the site of the annual Groundhog's Day tradition.

Disney's abandoned animal island is now an overgrown ruin that was almost the coolest attraction ever.