This abandoned dream castle and its cemetery look out over the city that once inspired their creation.

A diorama of the Civil War, fought by cats.

This public space is speckled with the eerie remnants of a defunct amusement park.

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

The abandoned coal loading dock is a canvas for unsanctioned art.

Contrary to what one might expect, ice forms inside this small cavern during the summer and melts during the winter.

The home and studio of a visionary woodworker now stands as a museum and example of his artistic genius.

The graffitied ruins stand hidden within the Pennsylvania woods.

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

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.

The oldest surviving botanic garden in the United States.

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

This palatial botanical garden is home to one of the largest pipe organs ever installed in a private residence, and a piece of Wood's cycad.

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

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

A park full of outsider art, created by college students studying outsider art.

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

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

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

Sail through this subterranean show cave that is home to a legend that would go on to name nearly everything around it.

An abandoned stretch of highway, deteriorating next to the operational one.

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

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