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A Lock and Dam on the upper Mississippi River built by the Corps of Engineers
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Fortifications Built During the Siege of Boston
June 16, 1775
The Army Corps of Engineers helped build some of Washington's earliest public buildings. They later directed the construction of the Washington Monument, Lincoln Memorial, Arlington National Cemetery, and the Library of Congress, among other sites. Along with the Work Projects Administration (WPA) during the Great Depression, the Corps planned, constructed, and maintained a vast flood control network along the Mississippi River. The engineers created dams and locks that made the Mississippi even more navigable by ships. And there's more.
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