At this airport "microcinema," you can catch a film before you catch a flight.

A small granite block at this monument's base is the only part of Lincoln's Tomb outside of Illinois.

This 19th century machine put animals (including humans) in boxes to study how they metabolized calories.

Honorable ranks graduating from the prestigious Army War College work hard to maintain their high standards of honor and erase those who don't.

A wonderfully curated used bookstore in an airport.

This circus town museum recognizes the outstanding clowns of history.

This unique zoo is the only place in the world where you can see all 15 species of crane.

Home to the world's largest refracting telescope and the birthplace of modern astrophysics.

Electrical pylon in the shape of Disney's beloved mouse.

This building at the south end of the boardwalk was once home to the U.S. Life-Saving Service and the U.S. Coast Guard before being rescued itself.

The historic home still shows the scars from a little run-in with the British in 1813.

One of the oldest active carousels in the country—but it might be missed by all but the keenest-eyed boardwalk strollers.

Walk up a ramp through a forest for panoramic views of Lake Michigan.

Step into a pastel time capsule where candy is truly dandy.

A dramatic, 360-degree recreation of Pickett's Charge in the Civil War.

A diorama of the Civil War, fought by cats.

The beloved, war-tested mascot of a Union regiment graces their battlefield monument.

Home of the only civilian casualty at the Battle of Gettysburg.

This monument marks the beginning journey of a wounded soldier's leg that ended up almost two states away.

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

In 1787, a group of delegates met at this very spot to drink, be merry, and ratify the Constitution of the United States.

An extensive, if one-sided, history of U.S. law enforcement's war on drugs.

The U.S. Navy’s preposterously detailed mini battleship took 77,000 hours to complete.

Part of a WWII submarine is lurking outside the Washington Navy Yard parking lot.