The Windmill Cottages consists of four houses that were designed, built or remodeled by F. Spaulding Dunbar, who graduated from MIT as a naval architect.  He was famous for designing small boats and yachts.  Although he had no training as a builder of houses, Spaulding was able to transfer his extensive knowledge of boat building into houses of authenticity, great charm and ambiance, with interiors that included every inch of space cleverly and artistically used, steep stairways, specially milled pine paneling, and unusual trussing and woodwork.  Situated on one half of the property and forming a wide U is the Dunbar House, with the Guest House attached by a breezeway on the east side and the Windmill, balancing this property, on the west side.  Across from the Dunbar House, on the other half of the property where the boatyard is situated, is the Boatyard Cottage, which is directly on a salt water cove, called the Mill Pond.  These properties are now owned respectively by Spaulding's daughter, Fran, and son, Bart.