An oft-overlooked, magically musical monolith that stands majestically between Arlington Cemetery and the Iwo Jima Memorial.

Right next to departures—how convenient!

This site is believed to be connected to the oldest house in Arlington County.

This pharmacist and his patient greet visitors to the National Community Pharmacists Association.

The local community brought back this land to transform it into a nature preserve.

These unusual rooms on wheels are holdovers from the 1960s.

A massive, majestic mammal watches over pedestrians from his perch atop a former B.P.O.E. lodge.

Long buried under the 20th-century landscape, this lift lock of the Alexandria Canal is the lone remnant of an ambitious early American transportation project.

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

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

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

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

Enjoy dishes that founding fathers once ate at this Colonial Williamsburg pub.

At Washington's Dulles Airport is a satellite museum (no pun intended) with three quarters of a million square feet of aircraft history.

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

The final resting place of an unidentified revolutionary soldier sits behind a Virginia church.

A former major munitions plant that has been converted into a sprawling art space.

Dine like an American revolutionary at Colonial Williamsburg.

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

This twice-relocated "Usonian" home is among the smallest built by master architect Frank Lloyd Wright.

America's first federal monument.

This stately building in Alexandria, Virginia was built by Freemasons to honor one of their most famous members.

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

This colonial tavern played host to George Washington, Thomas Jefferson, and other famous early Americans.