100-year-old shipwreck you can walk up to at low tide.

A Roman-style column in Oregon hides a spiral staircase inside.

Golden and naked, the figure that was once the highest point in New York is all that remains of the second Madison Square Garden.

This sculpture of a fisherman spent six years at the bottom of the Schuylkill River.

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

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

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

An Irish Memorial commemorating those who perished due to potato blight.

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

Erected in 1697 this Philadelphia bridge is the oldest surviving roadway bridge and perhaps the oldest stone bridge in the United States.

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

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

Yo, Adrian!

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.

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

One of the only Florida forts to remain in the hands of the Union all through the Civil War still stands as a historic stronghold.

A local landmark with generations of spraypainted messages, and more being added each day.

A former hospital is now home to a pizza parlor and maybe a few ghosts.