The story behind the mysterious symbol painted in front of the historic university's famous Rotunda.

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

The U.S. Army's giant warehouse of war art includes Hitler’s watercolors and Norman Rockwell oil paintings.

This campus chapel is Robert E. Lee's final resting place and a topic of debate about the legacy of the Civil War.

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

A lone historical marker off the highway and scattered debris are all that remain of this Cold War-era missile site.

Standing for over 200 years, the abandoned home of a Revolutionary War hero and later a succession of prison superintendents.

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

This sprawling farm was once a Cold War-era hideaway for the nation's top diplomats.

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

For nearly a year, General Ulysses S. Grant was based here during the American Civil War.

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

Outdoor exhibits explore the contributions of European, African, and indigenous peoples to American frontier culture.

This brick-lined pedestrian walkway was once a railway tunnel used during the Civil War.

This cannonball stands as a reminder of the final act of a fleeting governor amidst a revolution.

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.

An enormous warehouse filled with parade floats collected from over 50 years of patriotic celebrations.

The tomb was guarded by soldiers from both sides of the war, and some left their initials carved in the brick.

The taxidermy remains of the most popular pony in children's literature.

Extraordinary objects lurk in this quintessential regional museum.

Developed by focused shutterbugs, this museum exposes visitors to more than 6,000 different cameras.

A museum in the heart of Virginia peanut country devoted to the humble goober.

An eccentric company offers eccentric millionaires the opportunity to have spaceflight-related experiences.

Herbert Hoover's "Brown House" rural presidential retreat was a PR disaster amid the start of the Great Depression.