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

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

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

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

This meticulously extracted nervous system allegedly came from a 19th-century custodian who donated her body to science.

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

A mine fire has been burning under the deserted town since 1962, but this church is still going strong.

The oldest surviving botanic garden in the United States.

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.

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

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

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

This might just be the TARDIS of bookstores.

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

The origin of this mechanical boy was a mystery until he revealed his maker by writing it in perfect cursive.

This Philly cemetery is the eternal home of many famous area residents, including Rocky Balboa's wife.

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

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

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

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

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

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