Place

Information Panel: DC's First Building Block

A black and white image of two men standing in front of a body of water and a building is displayed.
Information Panel: DC's First Building Block

Photo: NPS / Claire Hassler

Quick Facts

Historical/Interpretive Information/Exhibits, Tactile Exhibit

In 1791, surveyors on Jones Point began to lay out the ten-mile square that would become Washington, D.C. The first marker for the survey- the south cornerstone- was set in place on this spot. Although the stone within this protective enclosure may be a replacement dating from 1794, it is nonetheless among the oldest existing physical monuments associated with the federal city of Washington, D.C.

In 1916, the Daughters of the American Revolution (DAR) assumed responsibility for maintaining D.C.'s cornerstones and mile markers. In 1926, the DAR purchased the Jones Point lighthouse and later deeded it to the National Park Service (NPS). Today, the DAR and the National Park Service work together to preserve and interpret both the south cornerstone and adjacent lighthouse. 

The inscription on the south cornerstone, worn by weather and water, is now illegible. The other cornerstones are inscribed with the name of the state (Virginia or Maryland), the year, the compass heading, and the phrase 'Jurisdiction of the United States.'

George Washington Memorial Parkway

Last updated: March 29, 2024