More Manhattan
Five ways to add real estate to Manhattan without tearing down existing buildings.
5. Fill in the Harlem River, which separates Manhattan and the Bronx. The Harlem River did not become a navigable waterway until 1895, when the Army Corps of Engineers dredged a shipping canal that provided direct passage for vessels from the East River to the Hudson. Nineteen years later, the creek that had served as the northern boundary of Manhattan was filled in, leaving the neighborhood of Marble Hill, still technically part of Manhattan, physically attached to the Bronx.
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