A six-foot pair of socks hangs from a drawer of the world's largest bureau.

This gorgeous reading room houses the oldest and largest art history library in the Netherlands.

The oldest existing one-room brick schoolhouse in Loudoun County.

Home to the organ played at General MacArthur's funeral.

A superbly preserved example of Georgian residential architecture that was once home to one of the founders of Alexandria, Virginia.

The only remaining African American schoolhouse in northern Virginia is now a museum dedicated to formerly enslaved people.

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

At Brandy Station, Civil War soldiers left their mark on the battlefield and the walls of this small wooden house.

A lightship turned museum, outfitted with artifacts from the vessel's past as part of the U.S. Lighthouse Service.

A glimpse into the sacrifices of military members during World War II.

An eponymous directional signpost erected by the first president of the United States.

Anna Anderson spent most of her life claiming to be the lost Romanov child Anastasia.

A long spiraling walkway winds through the woods, and around a copper beech tree at the center.

Hidden beneath the famous St. Peter's Basilica is a veritable city of the dead that may hold the remains of St. Peter himself.

The sign at the garden gate reads: "These Plants Can Kill."

The largest cemetery for enslaved people in Loudoun County was almost lost to history, if not for the research of a minister.

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

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

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

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

An abandoned railroad tunnel is now filled with bioluminescent bugs.

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

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

Rowdy rebels fortified this home during the first popular uprising in United States history.