The abandoned coal loading dock is a canvas for unsanctioned art.

Huge masonic hall in Philadelphia with lavishly themed rooms.

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

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

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

Tour the dark and beloved poet's former cobwebbed basement, which may have inspired "The Black Cat."

Philadelphia boasts one of the best — and most often overlooked — traditional Japanese gardens in North America.

A layered tribute to the work of mosaicist Isaiah Zagar.

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

The world’s first penitentiary, meant to be humane, drove men insane.

The third-tallest lighthouse in the United States stands as a reminder of Atlantic City's early days.

This Delaware River bridge is emblazoned with a catty slogan from a more prosperous time.

A playground inspired by differential calculus dangles from the ceiling of the Liberty Science Center.

If it feels like a speakeasy, that’s because it probably was one.

Marie told fortunes from her small stand on the Boardwalk for decades, including to a young Bruce Springsteen who would busk outside her booth.

Vacant Beaux-Arts buildings that serve as reminders of a beach town’s glory days.

A giant light 13 feet high shines near Thomas Edison's old Menlo Park lab.

The remains of an old sawmill, gristmill and the surrounding industry dating back to the 18th century.

The final resting place of one of the United States's greatest poets.

Several times a year, during low tide, two pairs of historic train tracks are revealed on this New Jersey beach.

A reservoir of vintage pinball machines and arcade games for the nostalgic and thrill seeking.

Now abandoned, the first public health hospital in the U.S. saw more than one million immigrants from around the world.

Step inside Lucy, the world's largest "elephant."

The site of one of history's most indelible and horrific tragedies.