1960 / 2000

Historical marker location:

1200 New Jersey Avenue Southeast, Navy Yard, District of Columbia

( Marker can be reached from Tingey Street Southeast east of New Jersey Avenue Southeast, on the left when traveling east.)

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.