Mitchell was an American general who is regarded as the father of the U.S. Air Force.

Boxwood is 120 acres (49 ha) located south of the Loudoun County town of Middleburg, extending along the northwest side of VA 626 roughly from the city line to the highway's junction with Virginia Route 705.

Now L-shaped in plan, it is 2+1⁄2 stories in height, with stone walls and wooden trim.

The original farmhouse portion has a bellcast roof that curves down to shelter a porch.

The Mitchells added an ell to the southwest in 1925 and also built an outbuilding that served them as a library.