Arlington Cemetery exhibit dedicated to death and grieving.

This historic furnace was once used to produce cannonballs during the Civil War.

The oldest active church in Pennsylvania is also the second oldest Swedish Church in the United States.

This extraordinary Depression-era expenditure was modeled after a postcard of a Mediterranean hotel.

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

Frank Lloyd Wright built this suburban synagogue late in life, but it stands among his most iconic masterpieces.

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

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

A living maritime paradox still floats in the same lake where it was built and resurrected... or was it?

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

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 historic old movie house was the scene of one of the Blob's most iconic attacks.

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

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

A model of a dinosaur that was named for Andrew Carnegie stands outside the museum that also bears his name.

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

A field of nothing but boulders which resembles a giant's gravel driveway.

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

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

Contrary to what one might expect, ice forms inside this small cavern during the summer and melts during the winter.

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

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

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

This hidden gem of a garden has one of the only surviving Victorian ferneries in America.