Benjamin Banneker: SW-9 Intermediate Boundary Stone, Historical boundary marker in Falls Church Park, Arlington, United States.
The SW-9 Intermediate Boundary Stone features a sandstone block measuring one foot square, extending 15 inches above ground with a protective iron fence.
President George Washington commissioned forty boundary stones in 1791 to define the perimeter of the District of Columbia, with this marker being part of that initiative.
The stone commemorates Benjamin Banneker, a free African American mathematician and astronomer who assisted in surveying Washington D.C.'s original boundaries.
Visitors can find inscriptions on different sides of the stone, including 'Jurisdiction of the United States' facing northeast and 'Virginia' on the opposite side.
This boundary stone was the first among all District of Columbia boundary markers to receive official listing in the National Register of Historic Places.
GPS coordinates: 38.88252,-77.15889
Latest update: March 3, 2025 21:19
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