A small 19th-century graveyard tucked away in the middle of a suburban neighborhood.

The highest point in Delaware is located under a trailer so this marker across the street will have to do.

A scenic fort on the harbor protected Philadelphia from an attack that never came.

The tombstone of the founder of the lost town of Ogletown is now stuck inside a traffic median.

North America’s largest collection of horological devices and home to a colossal clock with a dizzying array of features.

The last holdout of a pre-Civil War rebel who took the matter of slavery into his own hands.

This shale formation along the Appalachian Trail once inspired the third president of the United States.

These tourist trap caverns are said to be the former home of a legendary Pennsylvania Hermit.

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

This museum boasts a bucket of teeth and tells the tale of a 20th-century dental circus.

This park contains a number of standing stones meant to heal and inspire.

Pennsylvanian mass grave and possibly mass murder.

Yo, Adrian!

The oldest farmer's market in America is so ancient it was approved by the King of England.

When the Austin Dam failed it destroyed much of Austin...and then it failed again.

This Old Testament garden features 100 plants from biblical times.

Buildings that dynamite couldn't bring down were abandoned because of bathroom issues.

In which a local geological marvel becomes a quaint roadside attraction.

Over 100 concrete munitions bunkers are all that remain of a Pennsylvanian village seized by the US government.

This eerily well-preserved coal town was saved from destruction by a Sean Connery movie.

Once the "Eighth Wonder of the World," this iron railroad bridge was decimated by a tornado.

The universally beloved children's television figure is interred on a high hilltop in one of western Pennsylvania's oldest cemeteries.

This abandoned Poconos resort is haunted by a history of kitschy romance and a violent fugitive.

These beautiful ruins deep in the Pennsylvania woods are thought to have been a ski lodge or a speakeasy, but no one really knows.