This stuffed pigeon of war had the very serious name "John Silver" until he lost a leg in battle.

A real flying saucer, contracted by the U.S. Air Force.

Steepest flood safety railway in the entire world.

Memorializing an American tragedy of massive proportions.

The trials and tribulations of marking Poe’s grave.

North America’s largest collection of horological devices and home to a colossal clock with a dizzying array of features.

America's only nuclear missile silo open to the public.

Four, 18-foot-tall badminton shuttlecocks lie scattered about the lawn of a Kansas City museum.

Dedicated to the art and science of glass in equal measure, this space is as much laboratory as museum.

This museum devoted to the gothic author holds such interesting ephemera as his socks and walking stick.

Home to items never before seen by the public.

Berthed at the Charlestown Navy Yard in Boston, "Old Ironsides" is the oldest commissioned warship still afloat.

Soldiers were buried next to Lee's house in the center of Arlington Cemetery to dissuade the general from reclaiming his property after the war.

This isn't your average roadway—it's actually a National Park and a transportation pioneer.

This fort down the Potomac from Washington, D.C. was once the only defensive fort protecting the capital.

Home of the physician who set the leg of John Wilkes Booth after the Lincoln assassination.

Before Nixon, "watergate" meant canals.

Fittingly, America's museum of architecture is itself a magnificently designed old building.

Washington's iconic carousel has a nice piece of Civil Rights history.

The marker offers a rare chance to be in four U.S. states at once, though there's some controversy over its geographic accuracy.

The national park was once a plantation estate.

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

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

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