The Palisades, or simply Palisades, is a neighborhood in Washington, D.C., along the Potomac River, running roughly from the edge of the Georgetown University campus to the D.C.-Maryland boundary. MacArthur Boulevard is the main thoroughfare. The Palisades also includes the sub-neighborhood of Potomac Heights, which is bounded by MacArthur, Loughboro Road at the north end, Arizona Avenue at the south end, and the Potomac River.