Penn State's giant bug collection.

A train station that was abandoned by the coal industry and was later converted into a cocktail bar.

The trials and tribulations of marking Poe's grave.

A blank headstone topped with a pile of pennies marks the final resting place of the infamous assassin.

The 320-year-old tree that greeted General Lafayette and rerouted an interstate highway.

Exact replica of the ancient monument, but much, much lighter.

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

The ruins of this long-abandoned unsuccessful gold mine can still be found.

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

This secluded walking trail is a hidden gem of a Pittsburgh park.

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

A restored Pittsburgh house of God has been converted to a marvelous house of suds.

An out-of-place Air Force radar dome is all that denotes this park as a former missile launch site.

This beloved Baltimore spot features caged dolls, a giant Pez collection, and many, many mannequins.

The haunting "Hell House Altar" is one of the few remnants of an abandoned college that has been a magnet for local legends.

Walk a trail through a historic Quaker town that outlawed slavery in 1777 and was a major waypoint on the Underground Railroad.

This ruined quarry once produced the distinctive red sandstone used for construction projects in Washington, D.C.

Remnants of a storybook amusement park hidden behind a strip mall.

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

An eerie, decaying ghost town destined to fade into the forest.

This abandoned Victorian-style house was built in 1884.

Pennsylvania's highest point is spotted with boulders which were pushed to the surface by nothing but cold.

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

Built by the patriotic residents of Boonsboro in a single day.