This supermarket is suspended 25 feet above an interstate highway.

The iconic D.C. restaurant where the Cuban Missile Crisis was negotiated, now a Walgreens.

Bar full of oddities, specimens, artifacts and homages to the great dime museums of the past.

Railroad officials in the early 1900s sought to spare travelers the sight of Roman soldiers’ private parts.

The innocent intentions of this monument are somewhat lost in the sculpture's muscled imagery.

A public art jibe at one of the United States’ oldest and longest-serving senators.

Atop this media building, two hives containing more than 30,000 bees keep the surrounding area vibrant.

A memorial to a shareholder activist feared by CEOs around the United States.

A line of blue paint marks the route of the inaugural parade.

Corn-inthian columns with a uniquely American take on neoclassical architecture.

A surprising, but overlooked example of geology in the middle of the nation’s capital.

This unassuming passageway played a key role in one of the most important events in U.S. history.

More than 500 unique and specially designed cases collected by D.C.'s "Harmonica Case Man."

Also known as the Founding Church of Scientology.

A hidden passageway now marks the site of an assassination attempt on Ronald Reagan that some say broke a 140-year-old curse.

Look closely and you’ll notice that the color changes a third of the way up the tower.

There just so happens to be a court even higher than the U.S Supreme Court: a basketball court in the building itself.

Sit where JFK proposed to Jackie or where Nixon dined on meatloaf at this storied pub.

This restaurant has been a haven for D.C.'s LGBTQ community since the 1950s.

A heroic pigeon that, through a barrage of gunfire, delivered a message that saved over 100 lives in World War I.

Washington's top-secret Cold War-era doomsday communications tower is located in a small neighborhood park.

A diminutive plaque recalls the treetop sniper who almost killed Abe Lincoln.

A much-maligned monument to teetotalism.

This robust fence in front of a historic Georgetown home is likely made from hundreds of recycled Revolutionary War firearms.