U.S. Reservation 196
Historical marker location:
500 New Jersey Avenue Northwest, Swampoodle, District of Columbia
( Marker is at the intersection of 1st Street Northwest and New Jersey Avenue Northwest, on the right when traveling north on 1st Street Northwest.)
L'Enfant Plan for the Federal City. National Mall & Memorial Parks, National Park Service, U.S. Department of the Interior
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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.