Historical Marker
The White House
Historical marker location:
1600 Pennsylvania Avenue Northwest, Downtown Washington, District of Columbia
( Marker is on Pennsylvania Avenue Northwest east of 17th Street Northwest, on the right when traveling east.)
National Park Service, U.S. Department of the Interior.
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.