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

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

In the early 1800s, surgery was also a show.

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

The headquarters of the Fraternitas Rosae Crucis, complete with Rosicrucian pyramids, all in the Pennsylvania woods.

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

This church in Pittsburgh is home to the largest collection of religious relics in North America.

An Olympic hero stripped of his medals is buried in a town he never visited, which took his name after his death.

This might just be the TARDIS of bookstores.

Dr Barnes' $25 billion private collection of art and arboretum.

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

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

A modern ghost town whose inhabitants were driven away by the growth of nuclear power.

This little-known collection holds everything from "Dracula" notes, to the manuscript of "Ulysses," to the forged works of Shakespeare.

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

Collection of trolley cars in the woods represent one man's attempt to preserve transportation history.

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

A beautiful oddities shop crammed with strange and morbid curiosities.

The taxidermied remains of Charles Dickens' pet raven, which helped inspire one of Edgar Allan Poe's most famous poems.

A stone arch leads to a cavernous 1930s spring house tucked away in the Pennsylvania woods.

"Dark Sky Park" is heaven on Earth for astronomers, one of the rare U.S. locations with no artificial light pollution.

Found art has transformed this Pittsburgh neighborhood into a psychedelic dream.

Huge masonic hall in Philadelphia with lavishly themed rooms.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.