The graffitied ruins stand hidden within the Pennsylvania woods.

This hidden gem of a garden has one of the only surviving Victorian ferneries in America.

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

This lush forest valley was once mined for lumber to the extent that it was once nicknamed "The Pennsylvania Desert."

A failed piece of Orientalism has become the proud symbol of a community.

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

A museum dedicated to the strange and extravagant costumes and memorabilia of the mummers, a tradition older than Philadelphia itself.

This Old Testament garden features 100 plants from biblical times.

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

A clone-tree in Washington Square Park sprung from seeds that went to the Moon and back.

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

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

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.

This might just be the TARDIS of bookstores.

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

One artist's love letter to his city and its citizens plays out across dozens of bright murals painted on the sides of decrepit buildings.

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

This little museum in the town where zombies were born celebrates the living dead.

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

Mutant vegetables, transgenic mosquitos, and atomic rodents span the walls of this one-of-a-kind museum.

Huge masonic hall in Philadelphia with lavishly themed rooms.

Eccentric concrete mansion and museum designed and built by hand from the inside out.

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

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