A gift from Scotland to the United States in memory of the 270 lives lost when Pan Am Flight 103 exploded over Lockerbie due to a terrorist bombing.

The hidden offices underneath Memorial Bridge have been locked up since 1976.

Recorded as the first person buried in Arlington Cemetery.

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.

The controversial urban planner who designed Washington, D.C., was buried in Maryland, and can presently be found in Virginia.

The oldest continuously operating fish market in the United States.

A battleship’s mast sits atop a turret-like memorial, commemorating those who lost their lives in one of the precipitating events of the Spanish-American War.

This lonely waterfront memorial to the men of the Titanic was erected by the "Women of America."

The rogue roots are gradually consuming some of the historic marble grave markers.

A centuries-old stone pagoda from Japan stands among cherry trees beside the National Mall Tidal Basin.

The country's oldest continually-operated mini golf course lies hidden in plain sight, eclipsed by one of D.C.'s most popular tourist attractions.

A memorial dedicated to the famed North Pole explorer appropriately sits at the far edge of Arlington National Cemetery.

The Pentagon sits on a former island that was in Virginia at low tide and D.C. at high tide.

The romance of early commercial flight still fills this Art Deco destination.

Please don’t anchor your boat onto the Department of Defense’s underwater data cables.

Right next to departures—how convenient!

The remains of a historic plantation nestled in between a parking lot and the rental car return at Reagan National Airport.

Rumor has it the hot dog stand was targeted by two Russian nuclear missiles.

The Pentagon is so large that it was planned like a city, complete with internal highway infrastructure.

This lovely picnic spot featuring thunderous jet landings is an aircraft spotter’s dream.

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

Get up close to an F-4 Phantom flown in the Vietnam War at this Florida park.

This historical art colony is adorned with thousands of hand-carved concrete sculptures in the Mayan Revival style.

From Tintin to the Smurfs, Europe's greatest graphic icons are celebrated in a grand Art Noveau gallery.