Harford County Maryland (Vacant / Not In Use) has 10 places on the National Register of Historic Places including 1 place of National significance and 3 places of Statewide significance. Significant places include Havre de Grace Lighthouse, D. H. Springhouse, Harford National Bank and Pooles Island Lighthouse and Berkley School.
Some of the country's most noteable architects helped create the Harford County places including John Donohoo, Clinton Smith, John Donohoo, George Archer, Otto G. Simonson, Walter Cope and D.J. Shanahan. Prominent architectural styles found in Harford Country are Colonial Revival, Early Republic and Late Victorian.