A tour de force of a fountain, memorializing a man who loved fountains more than anything else.

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

An Olympic hero stripped of his medals is buried in a town he never visited, which took his name after his death.

The famous bell was secreted away and hidden in a church in Allentown during the British occupation of Philadelphia.

This jail which was in service for over a century is now open for curious visitors.

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

Yo, Adrian!

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

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

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

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

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 internal railway of one of the biggest steel plants in America has been transformed into a linear park with unique industrial views.

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

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

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

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

Dr Barnes' $25 billion private collection of art and arboretum.

Mural made of 100,000 pieces of hand blown glass, and until recently, the largest glass mural in the US.

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

Mysterious rocks that ring musically when struck.

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