An otherwise quiet campground becomes a bustling medieval town for two weeks every year.

Erected in 1697 this Philadelphia bridge is the oldest surviving roadway bridge and perhaps the oldest stone bridge in the United States.

This dramatic rail curve was once the target of a failed Nazi attack.

The sounds of the world's largest fully functioning pipe organ dazzle shoppers at a Philadelphia Macy's.

America's first serial killer rests in anonymity.

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

A tradition unlike any other, this marks the site of the annual Groundhog's Day tradition.

The body of St. John Neumann and his collection of hundreds of relics, on display in a Philly church.

This elaborate towering structure was once famed for its revolutionary height.

Pennsylvania's own Roswell-style UFO mystery.

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

An outlandish shoe shaped house built by an eccentric millionaire.

This titanic java kettle is one of the many kitschy landmarks located along America's OTHER famous highway.

Yo, Adrian!

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

An indoor miniature village and labor of love for Laurence Geiringer, a model railroad enthusiast.

The largest university building in the West is a gothic masterpiece containing dozens of theme rooms based on different countries.

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

The first American department store, and home to the largest operating musical instrument in the world.

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

This abandoned Poconos resort is haunted by a history of kitschy romance and a violent fugitive.

This might just be the TARDIS of bookstores.

The United States’s oldest funicular railway glides up and down a steep Pittsburgh street.