Mount Pleasant is a neighborhood in the northwestern quadrant of Washington, D.C. It is bounded by Rock Creek Park to the north and west; Harvard Street NW to the south; and 16th Street NW to the east. It is north of Adams Morgan and west of Columbia Heights. It is home to about 10,000 people. The neighborhood is served by the Mount Pleasant Line and the Crosstown Line buses. A series of "Heritage Trail" historical markers are installed in Mount Pleasant. The markers, which may be followed as a walking tour, consist of 17 poster-sized street signs featuring narrative, photographs and maps.