Almost all of the original boundary stones for Washington DC are still in the same spot they were placed in 1790-91. Even the ones in Virginia that aren't part of DC any more. The city was originally a diamond shape, but everything west of the Potomac was returned to Virginia in 1846.
The stones are in all sorts of odd places, peoples yards, in the woods, one is in the middle of a street. The wiki page has pictures of the locations.
The stones are in all sorts of odd places, peoples yards, in the woods, one is in the middle of a street. The wiki page has pictures of the locations.