Nothing says indulgence like a 1,500-pound chocolate castle.

A quirky collection of outsider art made from automobile parts.

This huge, disused viaduct is now a crumbling concrete underworld of covered in years of graffiti.

A larger-than-life statue of America's favorite sundae marks the place it was invented.

This shrine to McDonalds' most iconic sandwich holds a 14-foot tall burger.

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

In the bowels of a 19th-century brewery lurks a fine-dining restaurant offering an array of themed feasts.

Once on display alongside a giant Gumby, it’s as tall as a nine-story building when fully extended.

Pennsylvania's own Roswell-style UFO mystery.

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

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

The graffitied ruins stand hidden within the Pennsylvania woods.

The Pennsylvania landscape depicted by a quarter mile of mosaics made from used road signs.

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

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.

Enjoy a slice while browsing the world's largest collection of pizza memorabilia.

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

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

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

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

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

This eerily well-preserved coal town was saved from destruction by a Sean Connery movie.