A sign marks the plane crash that caused two nuclear bombs to fall in North Carolina.

Mystery surrounds a famous marshal of Napoleon's army.

The pop art icon's gravesite is broadcast 24 hours a day on his museum's website.

One man's real life disfigurement inspired a lasting local legend surrounding an eerie tunnel.

This massive airship factory is so large that it has its own indoor weather.

The longest escalator in the Western Hemisphere takes over three minutes to ride down.

This beautiful stone arch bridge wasn't even expected to stand for one day, but people have been crossing it for centuries.

This four-story steel sphere in Maryland was used to test biological weapons.

The story behind the mysterious symbol painted in front of the historic university's famous Rotunda.

One of Savannah's oldest and most haunted cemeteries, featuring graves desecrated by Sherman's Union Army.

The remnants of the fortress that saved Georgia from the Spanish still stand guard on their swampy island.

The abandoned bathhouse is all that remains of the hot springs considered Florida's original tourist attraction.

Soldiers honored the beloved Pat with a special grave.

This collection of Wild West movie memorabilia also claims to hold some secrets of the Lost Dutchman's mine.

A detached cement mixer has been transformed to resemble a relic from some obscure NASA mission to Oklahoma.

The largest land animal skull ever discovered.

This family driveway also serves as the highest point in Illinois.