Posted on December 7, 2013 by kjfitzNational Historic Landmarks in Maryland Here are ten U.S. National Historic Landmarks in the state of Maryland… © Bing MapsBaltimore Harbor Inspection Tugboat © Bing MapsClara Barton National Historic Site © Bing MapsBollman Suspension Truss Bridge © Bing MapsCarrollton Viaduct, World's Oldest Railroad Bridge Still in Use © Bing MapsUnited States Sloop of War Constellation © Google MapsFort Frederick © Bing MapsHomewood House © Bing MapsLightship Chesapeake (LV-116) © Bing MapsMontpelier Mansion © Bing MapsGeorge Washington's Mount Vernon Plantation Leave a Reply Cancel replyYour email address will not be published. Required fields are marked *Comment Name * Email * Website Save my name, email, and website in this browser for the next time I comment. Post navigation Previous PostPrevious Today in History – December 5Next PostNext Today in History – December 6