One of two lighted lanterns hung in the church belfry on the eve of the Revolutionary War to warn that the British were on their way.

This location holds the truth to what truly happened that faithful night.

This mighty white oak in Bethesda survived both the American Revolution and the construction of Washington D.C.'s metro red line.

Dogs, cats, horses, monkeys, frogs, and fish are laid to rest at the second-oldest pet cemetery in the U.S.

A rare example of a rural school in Washington, D.C.

The last vestige of a once substantial orchard and farm in the suburbs of Northern Virginia.

The location where the famed author and abolitionist began his journey to freedom.

This one-room doctor's office has been moved twice, and now lives on as a museum.

Known by many as once the world's smartest horse.