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

Rifle through images of skyscrapers, Worlds Fairs, and more in the largest public postcard repository in America.

A legal loophole makes it possible to get away with murder within this 50-square-mile section of Yellowstone.

A mass grave for victims of an airline disaster that led to much-needed safety improvements for commercial flights.

The site of one of history's most indelible and horrific tragedies.

A 1,100-ton train fell through the floor in 1953. Workers got it patched up in just 72 hours.

A disconnected rotary phone for "calling" lost loved ones offered a unique way of dealing with grief in disaster-stricken Japan.

This alley in downtown Chicago held the bodies of over 600 people after the fateful Iroquois Theatre fire.

Two massive and unstable sinkholes are yearning to unite, and their consummation could be catastrophic.

Brass cobblestones mark the places where individual Holocaust victims were taken from their homes.

A California city claims to be the home of a fast-food classic.

The remote resting place of a notorious Wild West outlaw whose death is shrouded in mystery.

This dig site outside D.C. is known for its exceptionally high density of baby dinosaur fossils and dinosaur eggs.

The world’s oldest baseball field had to fight to earn its record.

An engraved boulder marks the spot where Patsy Cline's life ended in a plane crash.

An inconspicuous suburban street corner is the site of San Diego's worst air disaster.

Remnants of the United States's largest accidental oil spill still mar a California valley.

The fictional star of "Breaking Bad" is memorialized with a real-life gravestone in his hometown.

It's where the final scene of the beloved Tom Hanks movie was filmed.

This isolated airport in the middle of the Everglades sees more alligators than planes.

The site of the first "historically true" UFO encounter in the U.S.

According to legend, you must remain completely silent while passing this man-made mound or suffer the consequences.

The pit stop from "The Texas Chainsaw Massacre" now serves beef and pork barbecue, not people.

A statue in the Texas town that proudly calls itself the killer bee capital of the world.