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

A toxic ghost town sitting atop a massive coal fire.

A three-story tower of books about Abraham Lincoln is one of the more unusual monuments to the president.

This semi-spooky remnant of an abandoned hotel provides fantastic views.

A well-preserved example of an early industrial operation in the northeastern United States.

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

This recreation of a 19th-century dime museum is full of oddities.

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

World's first "penitentiary," meant to be humane, drove men insane.

Buildings that dynamite couldn't bring down were abandoned because of bathroom issues.

A layered tribute to the work of mosaicist Isaiah Zagar.

An almost life-sized elephant named Ms. Ellie greets visitors at this jumbo-themed museum.

This charming colonial alleyway is one of the oldest continuously used residential streets in the U.S.

America's most famous museum of medical oddities is home to the remains of Albert Einstein's brain.

Yo, Adrian!

An outlandish shoe shaped house built by an eccentric millionaire.

This historic old movie house was the scene of one of the Blob's most iconic attacks.

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

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.

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

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