The boundary markers of the original District of Columbia are the 40 milestones that marked the four lines forming the boundaries between the states of Maryland and Virginia and the square of 100 square miles (259 km 2) of federal territory that became the District of Columbia in 1801 (see: Founding of the District of Columbia).

Learn About Our Nation’s Capital Boundary Stones. Stephen Powers documents America’s first federal monument, the original 10-mile square boundary of the District of Columbia.

2011年10月25日 · NOVABOSTCO's successor, the Nation's Capital Boundary Stones Committee (NACABOSTCO), chaired first by Terman and later by Stephen Powers, has worked since 2000 to ensure the preservation and appreciation of all of the stones, partnering with DCDAR, the American Society of Civil Engineers - National Capital Section (ASCE-NCS), the District of ...

2016年7月8日 · Placed under the authority of President George Washington, the D.C. Boundary Stones were laid out along the former D.C. boundary lines between 1791-1792, marking the border between Washington, Virginia and Maryland. Of the original 40 stones, 36 survive today with the other four stones having been replaced by replicas.

2017年5月17日 · Many are fortified by small iron fences, and one resides in the sea wall of a Potomac River lighthouse. Lining the current and former boundaries of Washington, D.C., these are the boundary stones of our nation’s capital.

2024年5月7日 · D.C.’s boundary stones were set in the ground in 1792, when the land was first surveyed to create the new capital city. Most of the original stones are still there, but the land around them has changed dramatically. There are boundary stones for beginners and boundary stones for the more adventurous.

2011年5月19日 · The dataset contains locations and attributes of DC Boundary stones, created as part of the DC Geographic Information System (DC GIS) for the D.C. Office of the Chief Technology Officer (OCTO) and participating D.C. government agencies.

These 40 boundary stones, located at one-mile intervals along the city's original borders, are the oldest federal monuments in the country. For a list of boundary stone locations and an interactive map, visit the following site: Boundary Stones of the District of Columbia. DC Inventory: November 8, 1964 (Joint Committee on Landmarks)

2005年11月11日 · Many of these forty historic stones yet survive. My self-imposed quixotic mission: visit them, photograph them, and record their GPS coordinates. Here's a Google Map of the results. Click on a marker to get high-resolution imagery and a locator map for that stone.

The 40 boundary stones are the oldest federal monuments in the country and outline the original 100-square-mile boundary of the District of Columbia. Of the 40 original boundary stones, 36 remain protected by wrought-iron fences, including ten scattered throughout Arlington, Falls Church and McLean.