The District of Columbia boundary stones in Virginia are sandstone markers erected in 1791, when the site of the City of Washington was first determined. The original area of the District was ten miles square and 20 stones were placed at one mile intervals along the boundary line in Virginia. The stones were about one foot square with beveled tops, and protruding from two to three feet above the ground. In 1915, the Daughters of the American Revolution began the recovery of the stones, many of which were by then lost or buried in debris. The Northwest No. 2 Boundary Marker of the Original District of Columbia is located in the backyard of a private property on North 38th Street on the boundary of Arlington and Fairfax counties. The Northwest No. 2 Boundary Marker was listed under the Multiple Property Document (MPD) form for the Boundary Markers of the Original District of Columbia.