The Marblehead Historic District is a 2,300-acre (930 ha) historic district roughly bounded by Marblehead Harbor, Waldron Court, Essex, Elm, Pond, and Norman Streets in Marblehead, Massachusetts. Among its notable features are Fort Sewall, a coastal fortification with origins dating to 1644, and two National Historic Landmarks, the General John Glover House, the Jeremiah Lee Mansion, and the Simon Bradstreet House. It includes some buildings from the 1600s and about 200 houses in total that were built before the American Revolution.