Maryland | University of Maryland | Bethesda, Maryland | Annapolis, Maryland | Silver Spring, Maryland | Montgomery County, Maryland | Cumberland, Maryland | Governor of Maryland | Frederick, Maryland | Maryland House of Delegates | Hagerstown, Maryland | Emmitsburg, Maryland | Columbia, Maryland | Westminster, Maryland | Laurel, Maryland | Howard County, Maryland | Havre de Grace, Maryland | University of Maryland, Baltimore | Bowie, Maryland | Maryland Institute College of Art | Kensington, Maryland | Rockville, Maryland | Potomac, Maryland | Landover, Maryland | Hunt Valley, Maryland | Severna Park, Maryland | Sandy Spring, Maryland | Province of Maryland | Prince George's County, Maryland | Poolesville, Maryland |
In terms of individually listed National Historic Landmarks and other Registered Historic Places, the original area includes the Maryland Statehouse and Hammond-Harwood House, the increase includes Artisan's House, Brice House, John Callahan House, and Chase-Lloyd House.