1924

Historical marker location:

1500 South Capitol Street Southeast, Navy Yard, District of Columbia

( Marker is on Potomac Avenue Southeast east of South Capitol Street Southeast, on the right when traveling west.)

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.