A daily replay of the experiment that proved the rotation of the Earth.

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

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

Current docking place of the SS United States, the fastest transatlantic ocean liner.

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

This stone tower marks a lookout point over the historic Washington Crossing, and maybe some buried treasure.

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

A historic covered bridge is but one example of an oddly prevalent American urban legend.

Yo, Adrian!

There aren't too many operational funiculars around, but Pittsburgh has two!

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

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

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

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

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

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

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

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

A layered tribute to the work of mosaicist Isaiah Zagar.

A toxic ghost town sitting atop a massive coal fire.

An abandoned cemetery lies in ruins as the surrounding forest swallows it whole.

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

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