Logan Circle
Historical marker location:
Logan Circle, District of Columbia
( Marker is at the intersection of Logan Circle Northwest and P Street Northwest, on the left when traveling south on Logan Circle Northwest.)
National Mall and 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.