The Minuteman Memorial Building

Historical marker location:

100 Constitution Avenue Northeast, Capitol Hill, District of Columbia

( Marker is on First Street Northeast (Alternate U.S. 1) south of Constitution Avenue Northeast, on the right when traveling north.)

ROA National Headquarters

The city was built on a swamp: The area that is now Washington, D.C. was originally a swampy, marshy region along the Potomac River. The construction of the city involved extensive drainage and landfill projects to make the land suitable for building.