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.

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

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 maritime museum that boasts the largest nautical library in the western hemisphere.

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

The graveyard holding the remains of George Washington's slaves was forgotten for nearly 200 years.

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

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.

Thomas Jefferson's estate is home to hundreds of varieties of historic fruits and vegetables.

The only place for a truly presidential dram.

An innovative attempt to break a siege in the American Civil War still scars the earth today.

At 207 feet, one of the world's longest continuous escalators.

Delaware's first railroad lasted only five years and spanned only 16 miles, but its ticket office has survived for two centuries.

An award-winning children’s garden enchants visitors at the intersection of natural beauty and fairy tales.

A blend of art, antiquities, and Americana fill this museum, surrounded by whimsical, enchanting gardens.

This splendid Versailles-inspired mansion has the largest French-style formal gardens in North America.

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

A labor of love built by local hang-gliding enthusiasts, this ideal launch spot was outlawed by the authorities and has since been largely abandoned.

This is the last surviving Bollman truss bridge in the world.

Evidence of a long-ago crush remains scratched into the glass at this historic Maryland House.

Just outside the Naval Academy, Hell Point is a historical marker that could easily be the point where failed students wait for the bus.