This demolished goliath of American industry once loomed over the depressed town it once made thrive.

Believed to be the birthplace of the United States Marine Corps.

A park in a small Pennsylvania town is home to an original sculpture by one of its native sons, legendary artist and activist Keith Haring.

The meeting of the northwestern corner of Delaware, the northeastern corner of Maryland, and the southern edge of Pennsylvania.

The singer, actor, and activist lived here during his final years, and now it’s a museum dedicated to his legacy.

Narrow gorges and deep pools created by long-ago glaciers.

The humble field where the first Major League Baseball game was played.

The oldest surviving presidential residence in the United States.

America's smallest national park site is the former residence of exiled Polish national hero Thaddeus Kosciuszko.

One of Philadelphia's largest murals resides hidden under this bridge.

This forgotten building was one of the few Philadelphia-area breweries to survive Prohibition.

Alexander Hamilton’s creation caused quite a bit of controversy.

This beloved marketplace mascot poops money and grants good luck.

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

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

South Philadelphia is home to Keith Haring's only surviving in situ collaborative public mural.

An outlandish shoe shaped house built by an eccentric millionaire.

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.

Instruments, apparatus, and rare books all relating to chemistry and its related sciences.

Ant sculptures march up the side of what used to be an iconic spot in punk rock lore.

Yo, Adrian!

The remains of a community that was forced to move for a dam that never materialized still rot in this Pennsylvania park.

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